CN111560708A - Water-absorbent gelling spunlace fabric containing alginate fibers and preparation method and application thereof - Google Patents

Water-absorbent gelling spunlace fabric containing alginate fibers and preparation method and application thereof Download PDF

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CN111560708A
CN111560708A CN202010268788.XA CN202010268788A CN111560708A CN 111560708 A CN111560708 A CN 111560708A CN 202010268788 A CN202010268788 A CN 202010268788A CN 111560708 A CN111560708 A CN 111560708A
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fibers
fabric
alginate
water
fiber
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CN111560708B (en
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张传杰
王泉泉
刘杰
王怀芳
朱平
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Qingdao University
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Qingdao University
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0212—Face masks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A61K8/733—Alginic acid; Salts thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/28—Polysaccharides or their derivatives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/46—Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B13/00—Treatment of textile materials with liquids, gases or vapours with aid of vibration
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
    • D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/144—Alcohols; Metal alcoholates
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
    • A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
    • A61L2300/41—Anti-inflammatory agents, e.g. NSAIDs

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Abstract

The invention discloses a water-absorbing and gelling spunlace fabric containing alginate fibers as well as a preparation method and application thereof, and is characterized in that: the spunlace fabric has an interpenetrating network structure and consists of sodium alginate fibers and other hydrophilic fibers, wherein the content of the sodium alginate fibers is 20-30%; the water absorption of the spunlace fabric is gelation, and the water absorption capacity is more than or equal to 30 g/g; the method is characterized by adopting continuous production equipment of spunlaced nonwoven fabric, blending and carding calcium alginate fibers and other hydrophilic fibers to prepare a fiber net with an interpenetrating network structure, then adopting sodium sulfate aqueous solution high-pressure jet to puncture and reinforce, and finally carrying out ultrasonic cleaning and drying to prepare the spunlaced fabric containing the alginate fibers. The preparation method of the spunlace fabric containing the alginate fibers is simple, is realized on the existing industrialized equipment, has high efficiency and proper cost, can be gelled when absorbing water, has the moisture retention time of not less than 40min, and can be used for preparing high-grade skin-care mask base cloth and high-end medical dressings.

Description

Water-absorbent gelling spunlace fabric containing alginate fibers and preparation method and application thereof
Technical Field
The invention belongs to the field of textile materials, and particularly relates to a water-absorbent gelling spunlace fabric containing alginate fibers, and a preparation method and application thereof.
Background
The alginate fiber is a high-performance fiber material prepared by taking water-soluble sodium (potassium) alginate extracted from seaweed as a raw material and a water solution of metal salt as a coagulating bath through wet spinning. The alginate fibers prepared by adopting different metal salt aqueous solutions as coagulating baths have certain differences in chemical structure and performance, and are a general name of the fibers. The common alginate fibers comprise calcium alginate fibers, copper alginate fibers, zinc alginate fibers, barium alginate fibers, sodium alginate fibers and the like, and the fibers have a series of excellent performances of excellent hygroscopicity, high oxygen permeability, biodegradability, biocompatibility, heavy metal adsorption and the like, and can be used for manufacturing medical dressings and skin-care mask base cloth. The medical dressing made of the alginate fiber can absorb wound exudate to form gel, protect the wound in a moist environment and accelerate the wound healing. The alginate fiber has natural skin caring, moisture keeping and skin caring effects, and also has special application in treating dermatoses, and is suitable for preparing facial mask base cloth for caring skin. However, the alginate fiber dressing and the mask base cloth which are commonly used at present can only be gelatinized in an aqueous solution containing sodium salt, but do not be gelatinized in the aqueous solution, and the water absorption capacity is small, so that the evaporation and the loss of absorbed water are too fast, the moisture retention time is short, and the application of alginate fiber products is limited.
The patent publication No. CN 104338173A of China, published as 2015, 2.11.3, entitled production method and application of a quick imbibition gelation seaweed hemostatic dressing, is to soak a textile or non-woven fabric product of calcium alginate fibers in an alcohol-water solution containing monovalent metal salt for treatment for a period of time, rinse the product by using a mixed solution of alcohol and water, and then dry, cut, package and sterilize the product to obtain the finished product. The preparation method of the application is complex, the treatment time is long, the efficiency is low, the cost is high, the water absorption capacity is less than 20g/g, the moisture retention time is about 30min, and the effect is not ideal. The invention discloses a seaweed fiber non-woven fabric and a production process and application thereof, wherein the Chinese patent publication number is CN 108179546A, the publication date is 2018, 6 and 19, the name of the invention is that seaweed fibers containing sodium alginate and calcium alginate, skeleton fibers and functional fibers are blended and carded into a net, then organic solvents are adopted for jet flow entanglement, and the non-woven fabric with the water absorption multiple of 15-40 times is prepared after drying. Because in the reinforcing process of the spunlace nonwoven fabric, high-pressure jet flow can splash and volatilize, the application adopts organic solvent jet flow to reinforce the fiber web, so that the potential safety hazard exists, and the toxicity and volatility of the organic solvent are higher, the cost is higher, and the method is not suitable for industrial mass production.
The Chinese patent publication No. CN 109010095A is published as 2018, 12 and 18, and the invention name is a facial mask liquid for a alginate fiber facial mask cloth and a preparation method thereof, the alginate fiber facial mask cloth absorbs essence provided by the application to form gel-shaped gel, so that the gel is beneficial to skin to absorb components in the facial mask liquid, and the gel is in contact with human skin and has the effects of strong heavy metal adsorption, minimally invasive healing, moisture retention and water locking, antibiosis and radiation protection and the like. However, sodium lactate has certain irritation, the content of the sodium lactate is not easy to be too high, otherwise, the face of a user has stabbing and burning feeling, and the user is very uncomfortable. Therefore, the facial mask solution prepared by the application can enable the alginate fiber facial mask to form gel, but the generated gel is small, the liquid absorption amount of the facial mask base cloth is 10-18 g/g, the application time of the facial mask is 15-25 min, and the functional components in the essence cannot be fully absorbed by the skin, so that waste is caused. More importantly, the compatibility between the sodium lactate and the functional components in the mask essence may be problematic, which may weaken the efficacy of the mask essence. The Chinese patent publication No. CN 109577003A, the publication date of 2019, 4 and 5, is named as alginate fiber mask base cloth and a preparation method thereof, carboxymethyl cellulose fibers and calcium alginate fibers are blended and carded into a net, spunlace is carried out to form non-woven cloth, then sodium alginate water solution is soaked, and drying is carried out to obtain the alginate fiber mask cloth, the gelation of the mask base cloth can be realized as long as liquid exists, and components containing potassium ions or sodium ions do not need to be added into essence liquid. According to the method, the water-soluble sodium alginate is deposited on the surface of the fiber, so that the hydrogel absorption performance of the alginate fiber mask base cloth is endowed. According to the mask prepared by the technical scheme, only the sodium alginate coating on the surface layer of the fiber forms gel after absorbing water, but the fiber matrix does not form gel, so that the gel amount is very small, the water absorption amount is 7.88-11.4 g/g, and the skin care effect is limited. In addition, the larger the water absorption amount of the mask base fabric prepared by the application is, the harder the hand feeling is, the poorer the air permeability is, and the poorer the application comfort is.
The Chinese patent publication No. CN 109629114A, the publication date of 2019, 4 and 16, the name of the invention is a gel mask material and a preparation method thereof, the application takes colloidal fibers or the mixture of the colloidal fibers and non-colloidal fibers as raw materials, the mask material is prepared by adopting a non-woven fabric process, and the preferred scheme is that a needle-punched non-woven fabric process is selected, so that the produced mask material can form gel. By adopting the technical scheme disclosed by the application, the prepared needle-punched non-woven fabric is thick and heavy, has a rough cloth surface, and is poor in comfort when used as a mask. In addition, by adopting the technical scheme of the application and combining the prior published technology to prepare the spunlace nonwoven fabric, in the spunlace reinforcement process, the colloidal fibers absorb water to form gel which is washed away by high-pressure water flow and cannot be formed into the fabric, or the prepared nonwoven fabric has poor gelling effect, hard hand feeling and uneven fabric surface.
The application blends and combs alginate fibers and skeleton fibers into a net, spunlaces the net into non-woven cloth, then impregnates the non-woven cloth with a modified solution, and washes the non-woven cloth with ethanol to prepare the non-woven cloth capable of absorbing water gel. The application has the advantages that the dosage of the seaweed fiber is high, the concentration of the modifier is high, the modification time is long, the efficiency is low, and the continuous production is not suitable; in addition, a large amount of ethanol is consumed in the modification and cleaning processes, so that the cost of the product is high, and the application and popularization of the product are not facilitated.
The Chinese patent publication No. CN 110787067A, the publication date of which is 2/14/2020, discloses a deep moisturizing mask without preservative and thickener and a preparation method thereof. The facial mask prepared by the application absorbs water on the front side to form gel, the application time is more than or equal to 40min, and deep water replenishing can be realized. However, the process of the application is complex, the product is only suitable for alginate fibers with specific specifications and mask base cloth with a specific structure, the cost of the mask is high, and the product is not matched with other essences, is mainly used for water replenishing, and is single in function and limited in application field.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a hydroentangled fabric containing alginate fibers capable of absorbing water and gelling, and a preparation method and applications thereof. The spunlace fabric containing alginate fibers is gelatinized after absorbing water, the water absorption capacity is more than or equal to 30g/g, and the moisture retention time is more than or equal to 40 min. The spunlace fabric is made into facial mask base cloth, and is optionally matched with essence with various functional components for use, so that the application time of the facial mask is prolonged, and the skin care effect is enhanced; the wound dressing can also be prepared into medical dressings to rapidly absorb and remove wound exudate, provide a continuous moist environment for wound healing, promote wound healing and reduce the replacement frequency of the dressings. In addition, the preparation method of the water-absorbent gelling spunlace fabric containing the alginate fibers is simple, can be realized on the existing industrial equipment, and has high efficiency and proper cost.
In order to achieve the above object, the present invention contemplates: the method is characterized in that commercially available common calcium alginate fibers and other hydrophilic fibers are used as raw materials, continuous production equipment of spunlace nonwoven fabrics is adopted, and the spunlace fabrics containing alginate fibers and capable of absorbing water and gelling are prepared through technological innovation. Firstly, uniformly blending and carding calcium alginate fiber raw materials and other hydrophilic fiber raw materials to prepare a fiber web with an interpenetrating network structure, and then puncturing and reinforcing the fiber web into spunlace non-woven fabric by adopting high-pressure sodium salt aqueous solution jet flow. Under the action of the sodium salt aqueous solution jet flow, the fiber web is reinforced to form the spunlace non-woven fabric, and meanwhile, the calcium alginate fibers in the fiber web and Na in the jet flow solution+Reacting to generate sodium alginate fiber in situ, thereby obtaining the spunlace fabric consisting of the sodium alginate fiber and other hydrophilic fibers, wherein the sodium alginate fiber component absorbs water to be gelatinized, and the other components absorb water to be not gelatinized, thereby playing a supporting role. The hydro-gelling hydro-entangled fabric containing alginate fiber is prepared by improving the blending process of the fiber and controlling the dosage of the calcium alginate fiber, and the fabric has better strength and is convenient to tear off and use. In addition, through the optimal design of the sodium salt aqueous solution concentration and the subsequent cleaning process, the gelation of the spunlace fabric in the processing process is avoided, so that the hand feeling, the cloth cover style and the air permeability of the spunlace fabric are maintained, and the use comfort of the spunlace fabric containing the alginate fibers and capable of absorbing water and gelling is improved. And finally, drying the cleaned spunlace fabric by hot air to obtain the spunlace fabric containing the alginate fibers and capable of absorbing water and gelling. The spunlace fabric containing alginate fibers is gelatinized after absorbing water, has water absorption capacity of more than or equal to 30g/g and moisture retention time of more than or equal to 40min, and can be made into facial mask base cloth and medical dressing.
In order to achieve the above purpose, the invention provides a preparation method of a spunlace fabric containing alginate fibers, which can absorb water and gel, and comprises the following specific steps:
(1) the calcium alginate fiber and other hydrophilic fiber are blended and carded evenly and are laid into a fiber net with an interpenetrating network structure.
The two types of fibers in the fiber net have different functions, wherein the calcium alginate fibers are converted into sodium alginate fibers through subsequent treatment, and can absorb water to generate gelation, so that the spunlace fabric containing the alginic acid fibers has better water absorption and gelation performance; other hydrophilic fibers do not gel after absorbing water, and are used as a framework of the spunlace fabric to enhance the mechanical property of the fabric, so that the fabric is convenient to take off and use. Because the two components have different functions, the fiber net adopts an interpenetrating network structure design, and the two fibers interact with each other, the prepared spunlace fabric containing the alginate fibers can absorb water and gel, has better mechanical property, and can be used for preparing base cloth of skin-care facial masks and medical dressings.
(2) And (3) adopting high-pressure sodium salt aqueous solution jet flow to puncture and reinforce the fiber web to prepare the spunlace fabric.
The prior art discloses a preparation method of a spunlace fabric containing alginate fibers and capable of absorbing water and gelling, which comprises the steps of compounding the alginate fibers with other fibers, then carrying out spunlace reinforcement to prepare a non-woven fabric, and then carrying out impregnation treatment by adopting a sodium salt aqueous solution. Because the alginate fibers in the spunlace nonwoven fabric are intertwined with other fibers and have compact structure, the concentration of a sodium salt solution is high, the treatment time is long, the subsequent cleaning burden is heavy, the spunlace nonwoven fabric belongs to intermittent production, the efficiency is low, and the cost is high.
The invention adopts high-pressure sodium salt water solution as jet flow for reinforcing the fiber web, and the calcium alginate fibers in the fiber web and Na in the jet flow solution form non-woven fabric under the action of the jet flow+Reacting to generate sodium alginate fiber in situ. The structure of the fiber net is loose, the pressure of jet flow is high, and the jet flow continuously impacts the fiber net, so that the reaction speed is accelerated. Compared with the prior art, the method has the advantages that the concentration of the sodium salt water solution can be reduced, the reaction time is short, the continuous operation can be realized, the efficiency is high, the cleaning is easy, and the cost is low.
Preferably, the hydro-gelling water-absorbent hydro-entangled fabric containing alginic acid fiber prepared by the technical scheme provided by the invention can be prepared into mask base cloth, can be matched with essences of various functional components at will and can be gelled, the water absorption capacity is more than or equal to 30g/g, and the application time is more than 40min, so that the application comfort and the skin care effect of the mask are enhanced. And the strength of the mask base cloth after absorbing the essence is still better, and the mask base cloth is convenient to apply and take off.
Preferably, the water-absorbent gelling spunlace fabric containing alginate fibers, prepared by the technical scheme provided by the invention, can be used in the field of medical health, can be used as a raw material of medical dressings, or can be used in combination with antibacterial and anti-inflammatory medicines. The spunlace fabric has the characteristic of gelation after imbibing, the water absorption capacity is more than or equal to 30g/g, the moisture retention time is more than or equal to 40min, a stable and long-acting moist healing environment for the wound can be provided, the wound can be rapidly healed, the dressing change frequency is reduced, and the dressing is convenient to take off and replace.
More preferably, the invention provides a method for preparing a hydroentangled fabric containing alginate fibers capable of absorbing water and gelling, which comprises the following steps:
(1) weighing calcium alginate fibers and other hydrophilic fibers, pre-opening the fibers respectively, and mechanically blending the opened fibers.
The other hydrophilic fibers are one or more of copper ammonia fibers, chitosan fibers, chitin fibers, viscose fibers, modal fibers, bamboo fibers, tencel fibers and cotton fibers.
(2) And (3) finely opening the blended fibers, feeding the blended fibers into a mixing and opening cotton machine for treatment, feeding the blended fibers into a carding machine for carding processing, and outputting to obtain a uniformly mixed fiber web.
The water-absorbent gelling spunlace fabric containing alginate fibers is realized by the fact that the alginate fibers in the fabric absorb water and undergo gelling, and therefore the calcium alginate fibers in the fiber web are required to be uniformly distributed, otherwise the mask base fabric or the medical dressing which is manufactured by cutting has partial water absorption and no gelling, or poor gelling effect, and the water absorption capacity is less than 30 g/g. Because the shapes, structures and performances of the calcium alginate fibers and other hydrophilic fibers are greatly different, in order to realize uniform blending and reduce the loss of the calcium alginate fibers, the uniform distribution of the calcium alginate fibers in the fiber web is realized by the combined implementation of technological methods and technical means, such as pre-opening the two fibers respectively, then mechanically blending, then finely opening and secondarily mixing, mixing for multiple times by a mixing and slitting machine, and the like.
(3) Feeding the fiber web into a lapping machine for cross lapping, and then carrying out multi-stage drafting on the lapped fiber web by a random drafting machine to prepare the fiber web with an interpenetrating network structure.
The content of the calcium alginate fibers in the fiber web is 20-30%.
The spunlace nonwoven fabric is lapped in different modes of straight lapping, semi-crossed lapping, crossed lapping and the like, the calcium alginate fibers and other fibers are uniformly distributed by adopting a crossed lapping process to prepare the fiber web with an interpenetrating network structure, and the entanglement and interaction among various fibers are stronger. This structural design has two advantages: when the fiber net is subjected to jet flow puncture reinforcement, the calcium alginate fibers can be prevented from being lost from the fiber net after being converted into sodium alginate fibers; in addition, the strength of the finished product of the spunlace fabric containing the alginate fibers can be increased, the spunlace fabric is convenient to take off and use, and the comprehensive performance of the spunlace fabric is improved. The content of the sodium alginate fibers in the spunlace fabric has a great influence on the comprehensive performance of the spunlace fabric, when the content of the sodium alginate fibers is less, the amount of gel formed by water absorption is less, the whole gel effect is difficult to form on the cloth surface, the water absorption amount is less than 30g/g, the moisture retention time is shorter, and the performance of the spunlace fabric is not obviously different from that of the common alginate fibers; when the content of the sodium alginate fiber is too high, the water absorption and gelation effects of the spunlace fabric are good, but the strength is poor, so that the spunlace fabric is inconvenient to take off and apply. The amount of sodium alginate fibers in the hydroentangled fabric is dependent on the amount of calcium alginate fibers in the web.
(4) Adopting high-pressure sodium sulfate aqueous solution jet flow with the concentration of 4-10 g/L to puncture and reinforce the fiber web to obtain the fiber web with the gram weight of 20-40 g/m2A spunlaced nonwoven.
The high-pressure sodium salt aqueous solution is adopted to puncture and reinforce the fiber net, and the sodium alginate fiber is generated in situ while the fiber net is entangled into cloth. Because the hydro-entangled reinforcing time is short, the reaction speed of calcium alginate fiber and sodium salt water solution is needed to be fast. The water solubility of the calcium sulfate generated when the sodium sulfate selected by the invention reacts with the calcium alginate fiber is smaller, so that the reaction speed is higher, and the calcium alginate fiber can be completely converted into the sodium alginate fiber in the spunlace process and is fixedly embedded in the spunlace fabric. In addition, when the concentration of the sodium salt aqueous solution is too low, the calcium alginate fibers are difficult to be completely converted into sodium alginate fibers in a short time; however, if the concentration is too high, the burden of the subsequent water washing is too heavy, which increases the cost. Comprehensively considered, the invention adopts a sodium sulfate aqueous solution with the concentration of 4-10 g/L as the high-pressure jet flow for puncture.
The higher the grammage of a hydroentangled fabric, the better its strength, but the poorer its air permeability. The water-absorbent gelling spunlace fabric containing alginate fibers is 20-40 g/m in gram weight2The spunlace non-woven fabric can ensure that the spunlace fabric has enough strength, is light and thin, has good air permeability and light transmittance, and is comfortable to use.
(5) And ultrasonically cleaning the spunlace nonwoven fabric, and drying by hot air to obtain the spunlace fabric containing the alginate fibers and capable of absorbing water and gelling.
The ultrasonic cleaning of the spunlaced nonwoven fabric is continuously carried out in three steps, wherein the first step is carried out by padding ethanol/water mixed solution with the concentration of 30-50%, the second step is carried out by padding ethanol/water mixed solution with the concentration of 50-80%, and the third step is carried out by padding absolute ethyl alcohol.
The spunlace nonwoven fabric obtained by adopting high-pressure sodium salt aqueous solution jet flow puncture reinforcement has the advantages that if the spunlace nonwoven fabric is not cleaned, more sodium salt residues exist on the surface of the spunlace nonwoven fabric, the spunlace nonwoven fabric has hard hand feeling and poor comfort. More importantly, the water-absorbing gel performance of the spunlace fabric is poor, so that the sodium salt remained on the surface of the cloth must be cleaned. By adopting the conventional ultrasonic washing process, the spunlace fabric is gelatinized in the washing process, so that the cloth cover style is damaged and the spunlace fabric cannot be used. The invention adopts the mixed solution of ethanol and water for cleaning, and can prevent the gelation of the spunlace fabric in the water washing process. Meanwhile, the ultrasonic cleaning process of the padding cleaning liquid is adopted and is implemented in three steps, and gradient cleaning is carried out by gradually providing the concentration of ethanol in the cleaning liquid, so that the cleaning effect can be ensured, the consumption of ethanol can be reduced, and the production cost can be reduced.
According to the method, the invention also provides the water-absorbent gelling spunlace fabric containing the alginate fibers, the spunlace fabric has an interpenetrating network structure and is composed of the sodium alginate fibers and other hydrophilic fibers, wherein the content of the sodium alginate fibers is 20-30%, the water-absorbent gelling of the spunlace fabric can be realized, and the water absorption capacity is more than or equal to 30 g/g. The other hydrophilic fibers are one or more of copper ammonia fibers, chitosan fibers, chitin fibers, viscose fibers, modal fibers, bamboo fibers, tencel fibers and cotton fibers. The hydro-entangled fabric containing alginic acid fiber capable of absorbing water and gelling is prepared by adopting continuous production equipment of hydro entangled non-woven fabric: firstly, blending and carding calcium alginate fibers and other hydrophilic fibers to prepare a fiber web with an interpenetrating network structure; then, the prepared fiber net is punctured and reinforced by adopting sodium sulfate aqueous solution high-pressure jet flow with the concentration of 4-10 g/L to obtain the fiber net with the gram weight of 20-40 g/m2Spunlace nonwoven fabrics; carrying out three-step continuous ultrasonic cleaning on the prepared spunlace fabric, padding an ethanol/water mixed solution with the concentration of 30-50% in the first step, padding an ethanol/water mixed solution with the concentration of 50-80% in the second step, and padding absolute ethyl alcohol in the third step; and finally, drying by hot air to obtain the water-absorbent gelling spunlace fabric containing the alginate fibers.
The invention also provides application of the water-absorbent gelling spunlace fabric containing the alginate fibers, in particular application of the spunlace fabric in the fields of beauty treatment and skin care and/or medical health, and the spunlace fabric can be made into a skin-care mask base cloth and/or a medical health material, such as a medical dressing.
The invention also provides a mask base cloth capable of absorbing water and gelling, which is prepared by cutting and/or incising the spunlace fabric containing the alginate fibers and capable of absorbing water and gelling prepared by the invention.
The invention also provides a facial mask capable of absorbing water and gelling, which is prepared by cutting and/or incising the spunlace fabric containing the alginate fibers and capable of absorbing water and gelling prepared by the invention.
The invention also provides a medical dressing capable of absorbing water and gelling, which is prepared by cutting and/or incising the spunlace fabric containing the alginate fibers capable of absorbing water and gelling prepared by the invention, or is prepared by jointly using the spunlace fabric containing the alginate fibers capable of absorbing water and gelling prepared by the invention and other materials.
Due to the adoption of the technical scheme, the water-absorbent gelling spunlace fabric containing the alginate fibers and the preparation method and application thereof have the beneficial technical effects that:
1. the water-absorbing and gelling spunlace fabric containing alginate fibers consists of sodium alginate fibers and other hydrophilic fibers, wherein the two components are uniformly distributed and interpenetrated with each other, but have different functions. The sodium alginate fiber component can absorb water and generate gelation, so that the water absorption capacity of the spunlace fabric is more than or equal to 30g/g, and the moisture retention time is more than or equal to 40 min; other hydrophilic fiber components absorb water and are not gelatinized, and the hydrophilic fiber components are a supporting framework of sodium alginate fiber gel, so that the spunlace fabric has enough strength and is convenient to take off and use.
2. The water-absorbing and gelling spunlace fabric containing the alginate fibers is suitable for people with various skin types when being prepared into mask base cloth. The facial mask base cloth can be matched with essence of various functional components at will for use, gelation can occur, the water absorption capacity is more than or equal to 30g/g, the application time is more than 40min, and the application comfort and the skin care effect of the facial mask are enhanced through the synergistic effect of the gel components and the functional components.
3. The water-absorbent gelling spunlace fabric containing alginate fibers can be used together with antibacterial and anti-inflammatory medicines when being prepared into medical dressings. The medical dressing has the characteristic of generating gelation by imbibition, the water absorption capacity is more than or equal to 30g/g, the moisture retention time is more than or equal to 40min, the medical dressing is favorable for providing a long-acting and stable moist environment for the wound, the wound healing is accelerated, the dressing change frequency is reduced, and the dressing is convenient to take off and replace.
4. The preparation method of the spunlace fabric containing alginate fibers and capable of absorbing water and gelling provided by the invention adopts commercially available calcium alginate fibers with common specifications and other hydrophilic fibers as raw materials, and can realize mass production by improving the industrialized production process of the conventional spunlace nonwoven fabric. The method has the advantages of ingenious idea, simple preparation method, high production efficiency, proper cost and convenience for popularization and application of products.
Drawings
FIG. 1: infrared spectra of the sample c in example 1, the water-washed residual cloth, the gel in the sample c, the calcium alginate fiber raw material and the cuprammonium fiber raw material for preparing the sample c;
FIG. 2: the liquid retention and moisture retention properties (evaporation rate vs. time) of hydroentangled fabrics a, c, e and commercially available alginate fiber hydroentangled fabric (alginate content 30%) in example 1;
FIG. 3: a commercially available alginate fiber hydroentangled fabric in example 1 (alginate fiber content 30%, basis weight of fabric 30 g/m)2) The appearance photos of the prepared mask base cloth before and after water absorption;
FIG. 4: photographs of the appearance before and after water absorption of the mask base cloth made of the sample a in example 1;
FIG. 5: photographs of the appearance before and after water absorption of the mask made of sample c in example 1;
FIG. 6: SEM morphology of sample d in example 2;
FIG. 7: SEM morphology of sample f in example 2;
FIG. 8: appearance digital photographs and SEM photographs of the three samples in example 3.
Detailed Description
The water-absorbent gelling alginate-containing hydroentangled fabric of the present invention, its preparation and use are described in further detail with reference to the following specific examples:
example 1
Respectively weighing 10 kg, 15 kg, 20 kg, 25 kg, 30 kg and 32 kg of commercially available calcium alginate fibers, and respectively weighing 90 kg, 85 kg, 80 kg, 75 kg, 70 kg and 68 kg of commercially available copper ammonia fibersPerforming pre-opening on the two fibers respectively, and then mechanically blending each part of calcium alginate fiber with the corresponding part of cuprammonium rayon fiber to obtain six parts of blended fibers, wherein the mass of each part of blended fibers is 100 kilograms; finely opening the blended fibers, feeding the fibers into a mixing and opening cotton machine for treatment, feeding the fibers into a carding machine for carding, and outputting the fibers to obtain a uniformly mixed fiber web; feeding the fiber web into a lapping machine for cross lapping, and then performing multi-stage small-multiple drafting on the lapped fiber web by a disorder drafting machine to prepare the fiber web with an interpenetrating network structure; adopting sodium sulfate high-pressure water solution jet with the concentration of 10g/L to perform high-pressure water-jet strengthening on the fiber web to prepare the fiber web with the gram weight of 20g/m2The spunlace nonwoven fabric of (1); sequentially padding 50% ethanol/water mixed solution, 80% ethanol/water mixed solution and absolute ethyl alcohol on the spunlaced non-woven fabric, and carrying out continuous ultrasonic cleaning; and finally, drying by hot air to obtain six kinds of spunlace fabrics containing the alginate fibers. Samples a, b, c, d, e and f are designated in the sequence from low to high sodium alginate fiber content in the hydroentangled fabric.
A commercially available alginate fiber hydroentangled fabric (alginate content 30%, basis weight 30 g/m) was tested using the following method2) And the water absorption W of the six types of spunlace fabrics containing alginate fibers prepared in example 1 and the content N of sodium alginate fibers in the spunlace fabrics. (1) Cutting the spunlace fabric into samples with the size of 10cm x 10cm, putting the samples into an oven, drying the samples at 80 ℃ to constant weight, then putting the samples into a glass drier, cooling the samples to room temperature, quickly weighing the samples, and recording the weight as W1(g) (ii) a (2) Soaking the weighed spunlace fabric sample in 100mL of distilled water, treating for 1min, taking out, centrifuging to remove free water in the sample (the rotation speed of a centrifuge is 500r/min, the centrifugation time is 1min), weighing, and recording as W2(g) (ii) a (3) Washing the spunlace fabric sample treated in the step (2) by using distilled water, and removing viscous gel substances in the sample; (4) placing the water-washed spunlace fabric sample in an oven at 80 ℃, drying to constant weight, then placing in a glass dryer to cool to room temperature, quickly weighing, and recording as W3(g) In that respect The water absorption W of the sample and the sodium alginate fiber content N of the sample were calculated according to the following formulaFive samples were tested and averaged.
Figure BDA0002442271810000091
Figure BDA0002442271810000092
The water absorption capacity of the alginate fiber-containing hydroentangled fabric capable of absorbing water and gelling prepared in example 1 and the sodium alginate fiber content of the hydroentangled fabric were measured by the above-mentioned methods, and the results are shown in Table 1.
TABLE 1 Properties of hydroentangled web containing alginate fibers prepared in example 1
Sample (I) a b C d e f Is commercially available
w(g/g) 20.2 25.1 30 35.8 41.2 43.7 10.8
N(％) 10.3 15.1 20.1 25.2 30.0 - 0
As can be seen from Table 1, the commercially available spunlace fabric containing alginate fibers has low water absorption and does not form gel when meeting water, and the content of the sodium alginate fibers in the fabric sample is 0%. The six spunlace fabrics prepared by the technical scheme of the invention can absorb water to form gel, and the content of the sodium alginate fibers in the spunlace fabric sample is consistent with the content of the calcium alginate fiber raw material in the fiber web, which shows that the calcium alginate fibers are completely converted into the sodium alginate fibers. However, as the amount of the calcium alginate fiber is increased, when the content of the calcium alginate fiber in the fiber web reaches 32%, the prepared spunlace fabric is broken in the washing process, and the content of the calcium alginate fiber cannot be tested.
Fully washing with distilled water to remove the gel in the sample c, collecting the washing liquids together, and drying to constant weight to obtain a gel substance; and washing the sample c which is washed with water and has the gel removed with water to remove the residual cloth, and drying to constant weight for later use. And (3) testing the infrared spectrums of the water-washed residual cloth of the sample c, the gel substance in the sample c and the calcium alginate fiber raw material and the cuprammonia fiber raw material for preparing the sample c by adopting a potassium bromide tabletting method, wherein the results are shown in a figure 1. As can be seen from FIG. 1, the infrared spectrum of the gel and that of the calcium alginate fiber raw material are 2926cm in wave number-1And 1025cm-1The difference shows that the calcium alginate fiber raw material reacts with sodium ions in the spunlace solution to be converted into water-soluble sodium alginateThe fiber, therefore, the spunlace fabric containing the alginate fiber prepared by the invention can absorb water and gel. And the infrared spectrograms of the residual cloth after water washing and the copper ammonia fiber raw material are consistent, which shows that the calcium alginate fibers in the fiber net are all converted into the sodium alginate fibers, the sodium alginate fibers are completely removed during water washing, and only one component of the copper ammonia fibers exists in the residual cloth after water washing. In conclusion, the water-absorbent gelling spunlace fabric containing the alginate fibers comprises the alginate fibers and other fibers, wherein the alginate fiber component can absorb water to form gel, and the other fibers cannot absorb water to form gel and are the framework of the mask base cloth.
The liquid-holding and moisture-retaining performance of the spunlace fabric is measured by the evaporation rate of the spunlace fabric, and the larger the evaporation rate is, the poorer the liquid-holding and moisture-retaining performance of the spunlace fabric is; conversely, the hydroentangled fabric has better liquid retention and moisture retention properties. The hydroentangled fabrics a, c, e prepared in example 1 and a commercially available alginate fiber hydroentangled fabric (alginate fiber content 30%, gram weight of fabric 30 g/m) were tested using the following method2) The evaporation rate F of (3). (1) Cutting the spunlace fabric into samples with the size of 10cm x 10cm, putting the samples into an oven, drying the samples at 80 ℃ to constant weight, then putting the samples into a glass drier, cooling the samples to room temperature, quickly weighing the samples, and recording the weight as m0(g) (ii) a (2) Soaking a spunlace fabric sample in distilled water for 1min, taking out, standing for 1min vertically until no liquid drops drop, then weighing, and recording as M (g); (3) spreading the weighed wet sample on a water bag, starting timing, applying for 5min, peeling off the sample from the water bag, weighing, and recording as mt(g) (ii) a (4) The weighed wet sample was continuously applied to the water bag and the procedure was repeated every 5 min. The evaporation rate F of the samples was calculated according to equation (3), and five samples were tested for each sample and averaged.
Figure BDA0002442271810000101
Using the method described above, the hydroentangled fabrics a, c, e prepared in example 1 and a commercially available alginate fiber hydroentangled fabric (alginate fiber content 30%, gram weight of fabric 30 g/m) were tested2) The results are shown in FIG. 2. As can be seen from FIG. 2, the application time was 15minThe evaporation rate of the commercially available alginate fiber spunlace fabric reaches over 50%, and considering that the skin absorbs the moisture in the mask base cloth simultaneously and the loss of the moisture in the mask base cloth is further accelerated when the mask is actually used, the actual use time of the mask base cloth made of the spunlace fabric is generally controlled to be 10-15 min. The water absorption of sample a was 20.2g/g, and as can be seen from FIG. 2, the evaporation rate reached 50% or more when the application time was 20min, so that the application time of the mask base cloth made of sample a was about 20min, and the object of the present invention could not be achieved. The water absorption capacity of the sample c is 30g/g, and as can be seen from fig. 2, the application time of the prepared mask base cloth can reach 40 min; the water absorption capacity of sample e was 41.2g/g, and as can be seen from FIG. 2, the application time of the resulting mask base cloth was up to 60 min.
From table 1 and fig. 2, it can be seen that when the content of the sodium alginate fiber in the prepared water-absorbent gelling spunlace fabric containing alginate fiber reaches 20%, the water absorption capacity is 30g/g, the application time can reach 40min, and the water replenishing effect is obvious; when the content of the sodium alginate fiber reaches 30%, the water content is 43.2g/g, and the application time is as long as 60 min. With further increase of the content of sodium alginate fiber, the strength of the prepared spunlace fabric becomes poor, and it is inconvenient to apply. Therefore, the content of the sodium alginate fiber in the water-absorbent gelling spunlace fabric is 20-30%, and the comprehensive performance of the fabric is optimal.
The commercially available alginate fiber spunlace fabric and the samples a and c prepared in the examples were cut and cut to prepare three types of mask base fabrics, and the appearance of the three types of mask base fabrics before and after water absorption is shown in fig. 3, 4 and 5. The mask base cloth made of the commercially available alginate fiber spunlace fabric absorbs water, does not generate gelation, and has poor transmittance; the mask base cloth made of the sample a and the sample c absorbs water to be gelatinized, and the mask base cloth is converted into transparent gel; with the increase of the content of the sodium alginate fibers, the light transmittance of the mask base cloth after water absorption is increased, the surface viscosity is increased, the gel amount is increased, but the strength is poor.
Example 2
Respectively weighing 20 kgPre-opening two kinds of commercially available calcium alginate fibers and 80 kg tencel fibers respectively, and then mechanically blending; finely opening the blended fibers, feeding the fibers into a mixing and opening cotton machine for treatment, feeding the fibers into a carding machine for carding, and outputting the fibers to obtain a uniformly mixed fiber web; feeding the fiber web into a lapping machine for cross lapping, and then performing multi-stage small-multiple drafting on the lapped fiber web by a disorder drafting machine to prepare the fiber web with an interpenetrating network structure; then respectively adopting sodium sulfate aqueous solution with the concentration of 2g/L, 4g/L, 6g/L, 8g/L, 10g/L and 12g/L to carry out high-pressure hydraulic needling reinforcement on the fiber web to prepare the fiber web with the gram weight of 40g/m2Six kinds of spunlace nonwoven fabrics of (1); sequentially padding the prepared six spunlace non-woven fabrics with 30 percent ethanol/water mixed solution, 50 percent ethanol/water mixed solution and absolute ethyl alcohol, and carrying out continuous ultrasonic cleaning; drying with hot air to obtain six kinds of spunlace fabrics containing alginate fibers. Samples a, b, c, d, e and f were named in order from low to high concentration of the aqueous sodium sulfate solution.
Comparative example 2
Respectively weighing 20 kg of commercially available calcium alginate fiber and 80 kg of tencel fiber, pre-opening the two fibers, and mechanically blending; finely opening the blended fibers, feeding the fibers into a mixing and opening cotton machine for treatment, feeding the fibers into a carding machine for carding, and outputting the fibers to obtain a uniformly mixed fiber web; feeding the fiber web into a lapping machine for cross lapping, and then performing multi-stage small-multiple drafting on the lapped fiber web by a disorder drafting machine to prepare the fiber web with an interpenetrating network structure; then respectively adopting sodium chloride aqueous solution with the concentration of 2g/L, 4g/L, 6g/L, 8g/L, 10g/L and 12g/L to carry out high-pressure hydraulic punching reinforcement on the fiber web to prepare the fiber web with the gram weight of 40g/m2Six kinds of spunlace nonwoven fabrics of (1); sequentially padding the prepared six spunlace non-woven fabrics with 30 percent ethanol/water mixed solution, 50 percent ethanol/water mixed solution and absolute ethyl alcohol, and carrying out continuous ultrasonic cleaning; and drying by adopting hot air to obtain six kinds of spunlace fabrics containing alginate fibers. Samples A, B, C, D, E and F were named in order of decreasing concentration of the aqueous sodium chloride solution to increasing concentration.
Example 2 the effect of the concentration of aqueous sodium sulfate solution on the performance of the prepared alginate fiber-containing hydroentangled fabric was mainly studied. The effect of the type of sodium salt in the hydroentangling jet solution on the performance of the hydroentangled fabric containing alginate fibers was investigated by comparative example 2 and example 2. The water absorption capacity of the hydroentangled fabric containing alginate fibers prepared in example 2 and comparative example 2, and the sodium alginate fiber content of the hydroentangled fabric were measured by the method of example 1, and the results are shown in table 2.
TABLE 2 Properties of hydroentangled fabrics containing alginate fibers prepared in example 2 and comparative 2
Figure BDA0002442271810000121
As can be seen from Table 2, the fabric obtained by adopting the jet flow of the sodium sulfate aqueous solution to puncture and reinforce has better hydrogel absorption performance, the higher the content of the sodium alginate fibers in the prepared spunlace fabric is along with the increase of the concentration of the sodium sulfate aqueous solution, the larger the water absorption capacity is, when the concentration of the sodium sulfate aqueous solution reaches 4g/L, the calcium alginate fibers are all converted into sodium alginate fibers, and the water absorption capacity can reach 30 g/g; the water-jet fabric obtained by adopting the water solution of sodium chloride for jet-flow puncture reinforcement has poor water-absorbing gel performance, only a small amount of calcium alginate fibers are converted into sodium alginate fibers, and the water-absorbing capacity is less than 30 g/g. The calcium alginate fibers react with the sodium sulfate to generate calcium sulfate with poor water solubility, so that the reaction can be accelerated; and the calcium alginate fibers react with sodium chloride to generate calcium chloride with better water solubility, the reaction speed is slow, only part of the calcium alginate fibers are converted into sodium alginate fibers, and if all the calcium alginate fibers are converted into the sodium alginate fibers, the concentration of the sodium chloride needs to be increased continuously.
The appearance of the samples d and f was observed by scanning electron microscopy, and the results are shown in fig. 6 and 7. As can be seen from FIG. 6, the hydro-gelling water-absorbent spunlace fabric containing alginate fibers prepared by the technical scheme provided by the invention is a spunlace nonwoven fabric with an interpenetrating network structure consisting of two fibers, wherein the fibers with serrated surfaces are sodium alginate fibers, and the fibers with smooth cylindrical surfaces are tencel fibers. As can be seen in fig. 7, the surface of sample f had particulate solids remaining, which was uncleaned sodium sulfate. When the concentration of sodium sulfate is lower, the surface of the fabric is clean, sodium salt residue is avoided, and the water absorption gel performance is poor; when the sodium sulfate concentration is more than 10g/L, the cleaning is difficult, the surface of the fabric has a large amount of sodium salt particles, and more thorough cleaning is required (the number of times of cleaning is increased, the cleaning time is prolonged), which increases the production cost. Therefore, in the preparation method of the water-absorbent gelling spunlace fabric containing the alginate fibers, the preferable concentration of the sodium sulfate aqueous solution is 4-10 g/L.
The spunlace fabric containing the alginate fibers prepared in the example 2 is cut into the specification of 10cm multiplied by 10cm, and is packaged and sterilized to be made into surgical wounds, burns and scalds and other acute and chronic wound dressings. The spunlace fabric containing the alginate fibers prepared in the example 2 is cut into a size of 4cm multiplied by 20cm, then is attached to the adhesive surface of a transparent film with the size of 9cm multiplied by 25cm, which is provided with medical adhesive on one surface, and is attached with silicon paper, and the surgical application is prepared after packaging and disinfection.
The time of imbibing gel is one of the important indexes of the hydrogel type dressing, the gel can accelerate hemostasis when being fast, and can absorb the wound exudate quickly, thereby being convenient for wound cleaning and nursing. A commercially available alginate fiber hydroentangled fabric (alginate content 30%, basis weight 30 g/m) was tested using the following method2) And the liquid absorption and gel time T of the six spunlace fabrics containing the alginate fibers prepared in the example 2, (1) cutting the sample into the specification of 5cm × 5cm for standby, (2) weighing 8.30g of sodium chloride and 0.37g of calcium chloride, dissolving the sodium chloride and the calcium chloride in 1000mL of distilled water to prepare a test solution, placing the test solution in a 37 ℃ constant-temperature water bath, preserving the temperature for standby, (3) placing the culture dish in the 37 ℃ constant-temperature water bath, injecting 10mL of preheated test solution, (4) immersing the cut sample in the culture dish solution, synchronously starting timing, stopping timing when the appearance of the sample is completely changed into transparent, recording the liquid absorption and gel time T(s), testing each sample for 5 times, and taking an average value.
Six hydroentangled fabrics prepared in example 2 and commercially available alginate fiber water were tested using the method described aboveNeedled fabric (alginate fiber content 30%, gram weight of fabric 30 g/m)2) The results are shown in Table 3.
Table 3 liquid imbibing gel time of hydroentangled web containing alginate fibers prepared in example 2
Sample (I) a b c d e f Is commercially available
T(S) 62 46 47 45 46 47 --
As can be seen from Table 3, the liquid-absorbent gelling time of sample a was 62 seconds, and the liquid-absorbent gelling time of the other samples was about 45 seconds, whereas the commercially available alginate fiber-containing spunlace fabric (alginate fiber content 30%, basis weight of fabric 30 g/m)2) Not completely gelled within a test time of 5 minutes. Therefore, the medical dressing prepared from the water-absorbent gelling spunlace fabric containing the alginate fibers can quickly absorb wound exudate, is converted into transparent gel, has short gelling time, quickly stops bleeding, is convenient for wound cleaning and nursing, and can be used for treating surgical wounds, burns and scalds and other acute and chronic wounds.
Example 3
Weighing 22 kg of commercially available calcium alginate fiber, 23 kg of cuprammonium fiber and 55 kg of tencel fiber respectively, pre-opening the three fibers respectively, and mechanically blending; finely opening the blended fibers, feeding the fibers into a mixing and opening cotton machine for treatment, feeding the fibers into a carding machine for carding, and outputting the fibers to obtain a uniformly mixed fiber web; feeding the fiber web into a lapping machine for cross lapping, and then performing multi-stage small-multiple drafting on the lapped fiber web by a disorder drafting machine to prepare the fiber web with an interpenetrating network structure; the fiber net is reinforced by high-pressure water-jet with sodium sulfate solution with concentration of 7g/L to obtain the fiber net with gram weight of 25g/m2The spunlace nonwoven fabric of (1); then, the cleaning is carried out according to the following three ways: (1) ultrasonically cleaning by using distilled water, and then drying by hot air to obtain a sample a; (2) ultrasonically cleaning by using distilled water, cleaning by using ethanol, and drying by using hot air to obtain a sample b; (3) and sequentially padding the ethanol/water mixed solution with the concentration of 40%, the ethanol/water mixed solution with the concentration of 70% and absolute ethyl alcohol, carrying out continuous ultrasonic cleaning, and drying by adopting hot air to obtain a sample c.
The sample c has good appearance, hand and performance in the aspects of water absorption and gel, but the samples a and b have great difference in appearance, hand and the like from the sample c. The cloth cover structures of the sample a and the sample b are compact, the appearance style of the spunlace non-woven fabric is lost, the appearance style of the spunlace non-woven fabric is closer to that of a film material, the spunlace non-woven fabric is very uneven, and the hand feeling is hard.
The appearance digital photograph and SEM photograph of the three samples prepared in example 3 are shown in fig. 8. As can be seen from FIG. 8, in the cleaning process, the sodium alginate fibers in the samples a and b are swelled and deformed, and are bonded to the surface of the non-woven fabric after being dried, even part of the sodium alginate fibers are dissolved and washed away, so that the finished fabric has a hard hand feeling and loses the style of the spunlace fabric in appearance.
Example 4
Respectively weighing 28 kg of commercially available calcium alginate fiber and 72 kg of tencel fiber, pre-opening the two fibers, and mechanically blending; finely opening the blended fibers, feeding the fibers into a mixing and opening cotton machine for treatment, feeding the fibers into a carding machine for carding, and outputting the fibers to obtain a uniformly mixed fiber web; feeding the fiber web into a lapping machine for cross lapping, and then performing multi-stage small-multiple drafting on the lapped fiber web by a disorder drafting machine to prepare the fiber web with an interpenetrating network structure; the fiber net is reinforced by high-pressure water-jet with sodium sulfate solution with concentration of 5g/L to obtain the fiber net with gram weight of 28g/m2The spunlace nonwoven fabric of (1); then, the cleaning is carried out according to the following four modes: (1) continuously ultrasonically cleaning a padding ethanol/water mixed solution with the concentration of 30%, and then drying by hot air to obtain a sample a; (2) continuously ultrasonically cleaning the padding with 50% ethanol/water mixed solution, and drying the cleaned padding with hot air to obtain a sample b; (3) continuously ultrasonically cleaning the padding with an ethanol/water mixed solution with the concentration of 80%, and then drying the padding with hot air to obtain a sample c; (4) carrying out continuous ultrasonic cleaning on the padding absolute ethyl alcohol solution, and then drying the padding absolute ethyl alcohol solution by hot air to obtain a sample d; (5) and sequentially padding an ethanol/water mixed solution with the concentration of 30%, an ethanol/water mixed solution with the concentration of 50% and absolute ethyl alcohol, carrying out continuous ultrasonic cleaning, and drying by adopting hot air to obtain a sample e.
The hand feeling of the samples a, b and c is relatively hard, the cloth surface is uneven, and the appearance style of the spunlace nonwoven fabric is not existed. Comparing the samples a, b and c, the cloth cover is relatively soft in hand feeling and improved in flatness along with the increase of the concentration of the ethanol. The reason for this is that the sodium alginate fibers in the cleaned nonwoven fabrics of samples a, b and c are in a swollen state, and after drying, the fibers are bonded to each other to form a sheet, which results in a stiff fabric surface. If the style of the spunlace non-woven fabric is kept, the prepared spunlace fabric containing the alginate fibers is soft in hand feeling and comfortable to use, and the key point is to control the water content of a sample after cleaning.
The appearance, the hand feeling, the water-absorbing gel and other properties of the samples d and e are good, but the consumption of ethanol by the process of the sample d is very large, which increases the cost. Therefore, the invention adopts the process of ultrasonic cleaning by padding cleaning liquid, is implemented in three steps, and performs gradient cleaning by gradually providing the concentration of ethanol in the cleaning liquid, thereby not only ensuring the cleaning effect, but also reducing the consumption of ethanol and lowering the production cost.
Example 5
Respectively weighing 25 kg of commercially available calcium alginate fiber and 75 kg of chitosan fiber, pre-opening the two fibers, and mechanically blending; finely opening the blended fibers, feeding the fibers into a mixing and opening cotton machine for treatment, feeding the fibers into a carding machine for carding, and outputting the fibers to obtain a uniformly mixed fiber web; feeding the fiber web into a lapping machine for cross lapping, and then performing multi-stage small-multiple drafting on the lapped fiber web by a disorder drafting machine to prepare five fiber webs with surface densities and interpenetrating network structures; adopting sodium sulfate aqueous solution with concentration of 9g/L to perform high-pressure water-jet strengthening on the five fiber nets to prepare the fiber nets with the gram weights of 15, 20, 30, 40 and 45g/m respectively2Five spunlace nonwoven fabrics of (1); sequentially padding the prepared five spunlaced nonwovens with 50 percent ethanol/water mixed solution, 70 percent ethanol/water mixed solution and absolute ethyl alcohol, and carrying out continuous ultrasonic cleaning; and drying by adopting hot air to obtain five spunlace fabrics containing alginate fibers. Samples a, b, c, d and e are designated in sequence from low to high grammage of the hydroentangled fabric.
Example 5 the effect of the grammage of a spunlace nonwoven fabric on the performance of a hydroentangled fabric containing alginate fibers prepared was studied, and the hydroentangled fabric prepared in example 5 was tested for water pick-up W and sodium alginate fiber content N using the method of example 1, and the results are shown in table 4.
Table 4 properties of example 5 for making hydroentangled fabrics
Sample (I) a b c d e
w(g/g) 24.3 35.2 39.8 44.1 48.2
N(％) 30.2 30.1 30.2 30.1 30.1
As can be seen from table 4, since the content of the sodium alginate fiber in the five hydroentangled fabrics was the same, but the water absorption capacity of the hydroentangled fabric gradually increased with the increase of the gram weight. This is because a part of water is absorbed between fibers in addition to the sodium alginate fiber water-absorbing gel, and the larger the grammage of the spunlace fabric is, the higher the fiber density is, the more water is absorbed and stored between fibers, and the larger the water absorption capacity is. When the gram weight of the spunlace fabric is too large, the air permeability is deteriorated, the spunlace fabric is too heavy after absorbing water, and the application comfort is deteriorated. In comprehensive consideration, the invention provides a preparation method of a spunlace fabric containing alginate fibers and capable of absorbing water and gelling, and the spunlace fabricThe gram weight is 20-40 g/m2。

Claims (10)

1. A hydro-entangled fabric containing alginate fiber capable of absorbing water and gelling, characterized in that: the spunlace fabric has an interpenetrating network structure and consists of sodium alginate fibers and other hydrophilic fibers, wherein the content of sodium alginate fiber components is 20% -30%, the spunlace fabric is gelatinized after absorbing water, and the water absorption capacity is more than or equal to 30 g/g.
2. A hydroentangled web containing alginate fibers capable of undergoing hydrogelation in accordance with claim 1, wherein: the other hydrophilic fibers are one or more of copper ammonia fibers, chitosan fibers, chitin fibers, viscose fibers, modal fibers, bamboo fibers, tencel fibers and cotton fibers.
3. A hydroentangled web containing alginate fibres, capable of absorbing water and gelling, as claimed in any one of claims 1 to 2, wherein: the spunlace fabric is prepared by continuous production equipment of spunlace non-woven fabric, firstly, calcium alginate fibers and other hydrophilic fibers are blended and carded to prepare a fiber net with an interpenetrating network structure, then, sodium sulfate aqueous solution high-pressure jet with the concentration of 4-10 g/L is adopted to puncture and reinforce the fiber net, and the gram weight of the fiber net is prepared to be 20-40 g/m2A hydroentangled fabric.
4. A hydroentangled web containing alginate fibers capable of undergoing hydrogelation in accordance with claim 3, wherein: and carrying out three-step continuous padding and ultrasonic cleaning on the spunlaced fabric, wherein the first step is to pad an ethanol/water mixed solution with the concentration of 30-50%, the second step is to pad an ethanol/water mixed solution with the concentration of 50-80%, and the third step is to pad absolute ethyl alcohol.
5. A method for preparing a hydroentangled web containing alginate fibers capable of absorbing water and gelling according to any one of claims 1 to 4, comprising the steps of:
(1) uniformly blending calcium alginate fibers with other hydrophilic fibers, carding, and laying into a fiber web with an interpenetrating network structure;
(2) adopting high-pressure sodium salt aqueous solution jet flow to puncture and reinforce the fiber web to prepare a spunlace fabric;
(3) and ultrasonically cleaning the prepared spunlace fabric, and then drying to obtain the spunlace fabric containing the alginate fibers, which can absorb water and gel.
6. A method of preparing a hydroentangled web containing alginate fibers capable of absorbing water and gelling as claimed in claim 5, wherein: the specific operation of the step (1) is as follows:
(a) weighing calcium alginate fibers and other hydrophilic fibers, pre-opening the calcium alginate fibers and other hydrophilic fibers respectively, and mechanically blending the opened fibers;
(b) finely opening the blended fibers, feeding the fibers into a mixing and opening cotton machine for treatment, feeding the fibers into a carding machine for carding, and outputting the fibers to obtain a uniformly mixed fiber web;
(c) feeding the fiber web into a lapping machine for cross lapping, and then carrying out multi-stage drafting on the lapped fiber web by a random drafting machine to prepare the fiber web with an interpenetrating network structure.
7. A method of preparing a hydroentangled web containing alginate fibers capable of absorbing water and gelling as claimed in claim 5, wherein: the ultrasonic cleaning of the spunlace fabric in the step (3) is continuously carried out in three steps, wherein the first step is carried out by padding ethanol/water mixed solution with the concentration of 30-50%, the second step is carried out by padding ethanol/water mixed solution with the concentration of 50-80%, and the third step is carried out by padding absolute ethyl alcohol.
8. Use of a hydroentangled web containing alginate fibres, capable of hydrogelling, as defined in any one of claims 1 to 4, in the field of cosmetic skincare and/or medical hygiene.
9. A facial mask base cloth capable of absorbing water and gelling and a facial mask prepared from the base cloth are characterized in that: the hydroentangled fabric produced using the hydrogelable alginate-containing fiber according to any one of claims 1 to 4, or produced by the process of producing the hydrogelable alginate-containing hydroentangled fabric according to any one of claims 5 to 7.
10. A medical dressing capable of absorbing water and gelling is characterized in that: is made by using the hydroentangled fabric containing alginate fibers capable of absorbing water and gelling according to any one of claims 1 to 4; or by using the hydroentangled web containing alginate fibers according to any one of claims 1 to 4, together with other materials; or a hydroentangled fabric obtainable by the process for the preparation of a hydroentangled fabric containing alginate fibres capable of absorbing water and gelling according to any one of claims 5 to 7; or a hydroentangled fabric obtained by the process for the preparation of alginate-containing fibres capable of absorbing water and gelling according to any one of claims 5 to 7, together with other materials.
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CN113647676A (en) * 2021-07-29 2021-11-16 山东康康新材料科技有限公司 Degradable alginate fiber cigarette filter rod and preparation method thereof
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CN115625940A (en) * 2022-09-07 2023-01-20 浙江大学医学院附属第一医院 Silk composite non-woven fabric dressing and preparation method and application thereof

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