CN116082666A - Pineapple leaf fiber hydrogel and preparation method thereof - Google Patents
Pineapple leaf fiber hydrogel and preparation method thereof Download PDFInfo
- Publication number
- CN116082666A CN116082666A CN202211567689.7A CN202211567689A CN116082666A CN 116082666 A CN116082666 A CN 116082666A CN 202211567689 A CN202211567689 A CN 202211567689A CN 116082666 A CN116082666 A CN 116082666A
- Authority
- CN
- China
- Prior art keywords
- pineapple leaf
- leaf fiber
- cellulose
- pineapple
- fiber hydrogel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/075—Macromolecular gels
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention relates to the technical field of pineapple leaf fiber processing, in particular to pineapple leaf fiber hydrogel and a preparation method thereof. The invention provides a preparation method of pineapple leaf fiber hydrogel, which comprises the following steps: mixing epichlorohydrin, an antibacterial agent and cellulose derived from pineapple leaf fibers at a temperature of between-2 and 1 ℃ and then carrying out cross-linking polymerization at a temperature of between 40 and 80 ℃. The pineapple leaf fiber hydrogel with excellent antibacterial performance is realized by optimizing a crosslinking system, and has the advantages of strong crosslinking stability, high mechanical strength and good drug carrying performance.
Description
Technical Field
The invention relates to the technical field of pineapple leaf fiber processing, in particular to pineapple leaf fiber hydrogel and a preparation method thereof.
Background
The pineapple leaf fiber is a natural, environment-friendly and degradable tropical plant fiber extracted from waste pineapple leaves, and is also a fiber with natural sterilization and bacteriostasis, large specific surface area, high surface hydroxyl content and excellent adsorption characteristic. The cellulose from pineapple leaf fibers is a natural organic polymer resource rich in nature, has the advantages of low cost, easy availability, environmental friendliness, good mechanical properties and the like, and has very wide development and utilization space. The cellulose contains a large number of hydroxyl groups, and can be endowed with special properties through a series of chemical or physical modification to prepare the functional polymer material.
The intelligent hydrogel has reversible volume phase change response characteristics due to small changes of stimulus such as temperature, magnetic field, electric field, pH, ionic strength and the like, and is an ideal carrier of antibacterial drugs. The soluble antibacterial active component is loaded in a proper carrier to prepare a slow-release antibacterial compound, so that the slow-release antibacterial compound can be used for effectively resisting bacteria in places needing to be antibacterial without damaging surrounding environment, and the slow-release antibacterial compound can be an effective measure for controlling harmful microorganism harm such as super bacteria in the future, and has wide application potential in the aspect of controlled release of antibacterial drugs.
At present, when the hydrogel is prepared by crosslinking polymerization by taking cellulose and the like as monomers in the prior art, the crosslinking stability is often difficult to ensure, and the problems of poor drug loading performance, low mechanical strength and the like exist in the practical application.
Disclosure of Invention
The invention provides pineapple leaf fiber hydrogel and a preparation method thereof, which are used for overcoming the defects of poor hydrogel crosslinking stability, poor drug carrying performance and low mechanical strength in the prior art, realizing the pineapple leaf fiber hydrogel with high mechanical strength and strong crosslinking stability, and prolonging the release of antibacterial performance.
The invention provides a preparation method of pineapple leaf fiber hydrogel, which comprises the following steps: mixing epichlorohydrin, an antibacterial agent and cellulose derived from pineapple leaf fibers at a temperature of between-2 and 1 ℃ and then carrying out cross-linking polymerization at a temperature of between 40 and 80 ℃.
Pineapple leaf fiber is a natural bactericidal and bacteriostatic fiber, and the crosslinking antibacterial agent can endow the pineapple leaf fiber with unique chemical properties, but the invention tries a large number of conventional crosslinking agents in the field in research and development, the crosslinking effect is poor, the pineapple leaf fiber is easily damaged after crosslinking, and the crosslinking stability is difficult to ensure.
Subsequent researches have unexpectedly found that by using epichlorohydrin as a crosslinking agent, the epichlorohydrin is firstly mixed at a low temperature, so that the epichlorohydrin can be fully and uniformly mixed on the premise of protecting the activity of the antibacterial agent, more free hydroxyl groups of cellulose are exposed, then the crosslinking polymerization is carried out at a higher temperature, covalent bond and hydrogen bond combination of the polyhydroxy groups of the cellulose and the antibacterial agent can be remarkably enhanced, the antibacterial agent is rapidly crosslinked and fixed on a cellulose molecular chain, the crosslinking reaction can finally be rapidly caused, the crosslinking reaction is not easily damaged after the crosslinking, the crosslinking stability is remarkably enhanced, the combination of the polyhydroxy groups and the antibacterial agent is compact, and the antibacterial property can be prolonged.
Preferably, the mixing time is 10 to 60 minutes, and the crosslinking polymerization time is 2 to 5 hours.
Preferably, the mass ratio of the cellulose to the epichlorohydrin is 1:1.5-1:3.
Preferably, the antibacterial agent is one or more of pineapple polyphenol, pineapple leaf polyphenol and tea tree essential oil.
Preferably, the antibacterial agent is used in an amount of 0.1 to 2wt% based on the weight of the cellulose.
Preferably, the cellulose is present in the form of a cellulose solution, which is obtained by: pretreating pineapple leaf fibers, mixing the pineapple leaf fibers with 4-8wt% NaOH aqueous solution and 3-13wt% urea aqueous solution in a weight ratio of 1:1-1:2, and centrifuging to obtain cellulose solution; wherein the concentration of the cellulose in the cellulose solution is 1-6wt%.
Preferably, the pretreatment includes: and sequentially carrying out steam explosion treatment and oxidation treatment on the pineapple leaf fibers.
The steam explosion treatment can realize the synergistic effects of thermal degradation, similar mechanical fracture, hydrogen bond destruction, structural rearrangement and the like, and after the pineapple leaf fiber is subjected to the steam explosion treatment, the influence on pectin, lignin and hemicellulose is large, but the cellulose content is not greatly changed and basically not lost; and HClO and ClO are present in the electrolyte generated by electrolyzing the aqueous solution of sodium chloride - 、ClO 3- 、H 2 O 2 O and O 3 And the like, can destroy pectin and lignin structures on pineapple leaf fibers, and does not lose cellulose.
The invention discovers that by controlling the sequence of the steam explosion treatment and the oxidation treatment, the steam explosion treatment is carried out first and then the oxidation treatment is carried out, so that the cellulose with excellent mechanical properties and high specific surface area can be obtained, and further the crosslinking stability of the final hydrogel can be improved.
Preferably, the pineapple leaf fiber is controlled to have a moisture content of 40 to 60wt% by soaking prior to steam explosion treatment.
More preferably, the soaking liquid used in the soaking process is water or sodium hydroxide solution with the mass fraction of 0.1-1 wt%.
The pineapple leaf fiber after steam explosion treatment is longer, and is very difficult to crush due to soft texture. In the prior art, before crushing, long fibers after steam explosion treatment are usually cut into short pieces and then crushed. In the invention, the water content of pineapple leaf fibers is controlled before steam explosion treatment, so that the length of the fibers after the steam explosion treatment can be greatly shortened. When the water content of pineapple leaf fiber is controlled to be in the range, the average length of the fiber after steam explosion treatment is obviously shortened, and the crushing difficulty is greatly reduced. And when the water content is controlled to 40 to 60wt% by immersing with the sodium hydroxide solution in the above concentration range, the fiber length is shorter.
Preferably, the steam explosion pressure is 2.5-4.0 MPa and the pressure maintaining time is 10-60 min during the steam explosion treatment.
Preferably, the oxidation treatment is: and (3) soaking the pineapple leaf fibers subjected to steam explosion treatment by using an electrolyte generated by electrolyzing a sodium chloride solution.
Preferably, in the electrolysis process, the current intensity is 1-5A, the voltage is 3-11V, and the electrolysis time is 10 s-60 min.
More preferably, the concentration of the sodium chloride solution is 0.05-1 g/ml.
Preferably, the current density at the time of electrolysis is 1 to 12mA/cm 2 ；
Preferably, the bath ratio in the electrolysis is 1:20 to 1:50.
Preferably, the soaking time is 10 to 60 minutes.
Preferably, the pretreatment further comprises: crushing the pineapple leaf fibers after the oxidation treatment to obtain pineapple leaf fiber powder; the granularity of the pineapple leaf fiber powder is 80-120 meshes.
In specific implementation, the person skilled in the art can perform conventional washing and drying operations on the treated pineapple leaf fibers according to actual needs.
As a preferred embodiment of the present invention, the preparation method comprises the steps of:
(1) Soaking treatment
The pineapple leaf fiber is soaked in water or sodium hydroxide solution with the mass fraction of 0.1-1 wt%.
(2) Steam explosion treatment
And (3) putting the pineapple leaf fibers into a steam explosion device for steam explosion treatment, and then washing and drying the treated pineapple leaf fibers.
(3) Oxidation treatment
Electrolyzing 0.05-1 g/ml sodium chloride aqueous solution at room temperature to obtain electrolyte; soaking and stirring pineapple leaf fibers subjected to steam explosion treatment in the electrolyte, wherein the bath ratio is 1:20-1:50; and then washing and drying the pineapple leaf fibers after the oxidation treatment.
(4) Crushing treatment
Pulverizing the pineapple leaf fibers subjected to electrochemical treatment, and sieving with a 80-120 mesh sieve.
(5) Hydrogel preparation
Dissolving pineapple leaf fibers in a mixture of 4-8wt% NaOH aqueous solution and 3-13wt% urea aqueous solution in a weight ratio of 1:1-1:2, and centrifuging at 15 ℃ for 20min at 8000r/min to obtain a cellulose solution; and then stirring and mixing the cellulose solution, the antibacterial agent and the epichlorohydrin at the temperature of between-2 and 1 ℃, then reacting at the temperature of between 40 and 80 ℃, and finally washing with water to obtain the pineapple leaf fiber hydrogel.
The invention further provides pineapple leaf fiber hydrogel, which is prepared by the preparation method.
According to the pineapple leaf fiber hydrogel and the preparation method thereof, provided by the invention, the pineapple leaf fiber hydrogel with excellent antibacterial performance is realized by optimizing a crosslinking system, and the pineapple leaf fiber hydrogel has the advantages of strong crosslinking stability, high mechanical strength and good drug carrying performance. In addition, the invention uses natural polymer fiber as raw material, the preparation process is simple and efficient, the process condition is mild, the environment is protected, the raw material source is wide, the price is low, the safety is high, and the invention can be used as a novel technology for preparing the composite material with excellent preparation performance and ecological environment protection.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment provides pineapple leaf fiber gel, and the preparation method comprises the following steps:
(1) And (3) soaking the pineapple leaf fibers in water to obtain the pineapple leaf fibers with the water content of 50%.
(2) Steam explosion treatment
Putting the soaked pineapple leaf fibers into a steam explosion device for steam explosion treatment; and then washing the treated fiber with water and drying. The steam explosion pressure is 3MPa and the pressure maintaining time is 60s during the steam explosion treatment. The average length of the treated pineapple leaf fiber is 4.81+/-0.12 cm.
(3) Oxidation treatment
At room temperature, sodium chloride electrolyte solution with 0.05g/ml content was prepared with a current intensity of 2A and a voltage range of 8V, a current density of 2mA/cm 2 An aqueous solution for treating pineapple leaf fibers was prepared by electrolysis in an electrolytic cell for 30 min. Then, the pineapple leaf fiber after steam explosion treatment is soaked in the water solution and stirred, and the soaking time is 30 minutes, and the bath ratio is 1:50. And then washing the treated fiber with water and drying.
(4) Crushing treatment
Pulverizing the pineapple leaf fiber subjected to electrochemical treatment, and sieving with 80 mesh sieve.
(5) Hydrogel preparation
Dissolving pineapple leaf fiber in 6wt% NaOH and 12wt% urea water solution at a weight ratio of 1:1, mechanically stirring for 10min to dissolve rapidly, and centrifuging at high speed to remove bubbles and impurities to obtain cellulose solution with cellulose concentration of 4wt%. Then adding 0.1wt% of tea tree essential oil (relative to the weight of cellulose), wherein the mass ratio of the cellulose to the epichlorohydrin is 1:2, stirring and mixing for 30min at 0 ℃, and then placing in a 70 ℃ incubator for reaction for 5h. Finally, washing with water to obtain the pineapple leaf fiber hydrogel.
The equilibrium swelling rate of the pineapple leaf fiber hydrogel in distilled water is 24.89g/g, the stretching rate is 54.83%, the porosity is 22.34%, and the antibacterial rates on escherichia coli and staphylococcus aureus are 97.6% and 98.5%, respectively.
Example 2
The embodiment provides pineapple leaf fiber gel, and the preparation method comprises the following steps:
(1) And (3) soaking the pineapple leaf fibers in a sodium hydroxide solution with the mass fraction of 0.5wt% to obtain the pineapple leaf fibers with the water content of 60%.
(2) Steam explosion treatment
Putting the soaked pineapple leaf fibers into a steam explosion device for steam explosion treatment; and then washing the treated fiber with water and drying. The steam explosion pressure is 4.0MPa and the pressure maintaining time is 10min during the steam explosion treatment. The average length of the treated pineapple leaf fiber is 3.42+/-0.15 cm.
(3) Oxidation treatment
At room temperature, a sodium chloride electrolyte solution was prepared at a concentration of 0.5g/ml using a current intensity of 2A and a voltage of 5V at a current density of 4mA/cm 2 An aqueous solution for treating pineapple leaf fibers was prepared by electrolysis in an electrolytic cell for 60min. Then, the pineapple leaf fiber after steam explosion treatment is soaked in the water solution and stirred, and the soaking time is 40min, and the bath ratio is 1:20. And then washing the treated fiber with water and drying.
(4) Crushing treatment
Pulverizing the pineapple leaf fiber subjected to electrochemical treatment, and sieving with 100 mesh sieve.
(5) Hydrogel preparation
Dissolving the pineapple leaf fiber in 7wt% NaOH/12wt% urea aqueous solution with the weight ratio of 1:1, mechanically stirring for 8min to enable the pineapple leaf fiber to be dissolved rapidly, and centrifuging at a high speed to remove bubbles and impurities to obtain a cellulose solution with the cellulose concentration of 2wt%. Then adding pineapple polyphenol (relative to the weight of cellulose) accounting for 0.5 percent by weight, wherein the mass ratio of the cellulose to the epichlorohydrin is 1:2.5, stirring and mixing for 20min at the temperature of minus 2 ℃, then placing the mixture into a 70 ℃ incubator for reaction for 4h, and finally washing the mixture to obtain the pineapple leaf fiber hydrogel.
The equilibrium swelling rate of the pineapple leaf fiber hydrogel in distilled water is 35.27g/g, the stretching rate is 60.21%, the porosity is 32.57%, and the antibacterial rates on escherichia coli and staphylococcus aureus are 98.3% and 97.6%, respectively.
Example 3
The embodiment provides pineapple leaf fiber gel, and the preparation method comprises the following steps:
(1) And (3) soaking the pineapple leaf fibers in water to obtain pineapple leaf fibers with the water content of 40%.
(2) Steam explosion treatment
Putting the soaked pineapple leaf fibers into a steam explosion device for steam explosion treatment; and then washing the treated fiber with water and drying. The steam explosion pressure is 2.5MPa and the pressure maintaining time is 20min during the steam explosion treatment. The length of the treated pineapple leaf fiber is 3.97+/-0.09 cm.
(3) Oxidation treatment
At room temperature, a sodium chloride electrolyte solution with a content of 1g/ml was prepared using a current intensity of 2A and a voltage range of 3V, a current density of 6mA/cm 2 An aqueous solution for treating pineapple leaf fibers was prepared by electrolysis in an electrolytic cell for 10min. Then, the pineapple leaf fiber after steam explosion treatment is soaked in the aqueous solution and stirred for 30min, the bath ratio is 1:50, and then the treated fiber is washed with water and dried.
(4) Crushing treatment
Pulverizing the pineapple leaf fiber subjected to electrochemical treatment, and sieving with 120 mesh sieve.
(5) Hydrogel preparation
The pineapple leaf fiber is dissolved in 7wt% NaOH/12wt% urea aqueous solution with the weight ratio of 1:1.5, mechanically stirred for 5min to be dissolved rapidly, and then centrifuged at a high speed to remove bubbles and impurities, thus obtaining cellulose solution with the cellulose concentration of 6%. Then adding 1wt% of pineapple polyphenol (relative to the weight of cellulose), wherein the mass ratio of the cellulose to the epichlorohydrin is 1:2, stirring and mixing for 40min at the temperature of 1 ℃, then placing the mixture in a 60 ℃ incubator for reaction for 5h, and finally washing the mixture with water to obtain the pineapple leaf fiber hydrogel.
The equilibrium swelling ratio of the pineapple leaf fiber hydrogel in distilled water is 28.46g/g, the stretching ratio is 51.36%, the porosity is 29.54%, and the antibacterial rates on escherichia coli and staphylococcus aureus are 97.8% and 99.5%, respectively.
Example 4
This comparative example provides a pineapple leaf fiber gel, which is prepared in the same manner as in example 1, except that: the moisture content of pineapple leaf fiber before steam explosion treatment is 20%. The average length of the treated pineapple leaf fiber is 10.24+/-0.42 cm.
Comparative example 1
This comparative example provides a pineapple leaf fiber gel, which is prepared in the same manner as in example 1, except that: the cross-linking agent is glutaraldehyde. The equilibrium swelling rate of the pineapple leaf fiber hydrogel in distilled water is 16.24g/g, the stretching rate is 19.87%, the porosity is 15.36%, and the antibacterial rates on escherichia coli and staphylococcus aureus are 80.74% and 84.37%, respectively.
Comparative example 2
This comparative example provides a pineapple leaf fiber gel, which is prepared in the same manner as in example 1, except that: the mixing and crosslinking were carried out simultaneously at a temperature of 20 ℃.
The pineapple leaf fiber hydrogel has an equilibrium swelling ratio of 10.27g/g in distilled water, a stretching ratio of 6.21%, a porosity of 8.48%, and antibacterial rates of 72.58% and 71.24% on escherichia coli and staphylococcus aureus respectively.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for preparing pineapple leaf fiber hydrogel, which is characterized by comprising the following steps: mixing epichlorohydrin, an antibacterial agent and cellulose derived from pineapple leaf fibers at a temperature of between-2 and 1 ℃ and then carrying out cross-linking polymerization at a temperature of between 40 and 80 ℃.
2. The method for preparing pineapple leaf fiber hydrogel according to claim 1, wherein the mass ratio of cellulose to epichlorohydrin is 1:1.5-1:3.
3. The method for preparing pineapple leaf fiber hydrogel according to claim 1 or 2, wherein the antibacterial agent is one or more of pineapple polyphenol, pineapple leaf polyphenol, tea tree essential oil.
4. A method of producing a pineapple leaf fiber hydrogel according to any one of claims 1 to 3, wherein said antimicrobial agent is used in an amount of 0.1 to 2wt% based on the weight of said cellulose.
5. The method for preparing pineapple leaf fiber hydrogel according to any one of claims 1 to 4, wherein said cellulose is present in the form of a cellulose solution, said cellulose solution being obtained by: pretreating pineapple leaf fibers, mixing the pineapple leaf fibers with 4-8wt% NaOH aqueous solution and 3-13wt% urea aqueous solution in a weight ratio of 1:1-1:2, and centrifuging to obtain cellulose solution;
wherein the concentration of the cellulose in the cellulose solution is 1-6wt%.
6. The method for preparing pineapple leaf fiber hydrogel according to claim 5, wherein said pretreatment comprises: and sequentially carrying out steam explosion treatment and oxidation treatment on the pineapple leaf fibers.
7. The method for preparing pineapple leaf fiber hydrogel according to claim 6, wherein the pineapple leaf fiber moisture content is controlled to 40-60 wt% by soaking before steam explosion treatment; preferably, the soaking liquid used in the soaking process is water or sodium hydroxide solution with the mass fraction of 0.1-1 wt%.
8. The method for preparing pineapple leaf fiber hydrogel according to claim 6 or 7, wherein said oxidation treatment is: soaking pineapple leaf fibers subjected to steam explosion treatment by using electrolyte generated by electrolyzing sodium chloride solution;
preferably, the concentration of the sodium chloride solution is 0.05-1 g/ml.
9. The method for preparing pineapple leaf fiber hydrogel according to any one of claims 6 to 8, wherein said pretreatment further comprises: crushing the pineapple leaf fibers after the oxidation treatment to obtain pineapple leaf fiber powder; the granularity of the pineapple leaf fiber powder is 80-120 meshes.
10. Pineapple leaf fiber hydrogel prepared by the preparation method of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211567689.7A CN116082666A (en) | 2022-12-07 | 2022-12-07 | Pineapple leaf fiber hydrogel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211567689.7A CN116082666A (en) | 2022-12-07 | 2022-12-07 | Pineapple leaf fiber hydrogel and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116082666A true CN116082666A (en) | 2023-05-09 |
Family
ID=86200061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211567689.7A Pending CN116082666A (en) | 2022-12-07 | 2022-12-07 | Pineapple leaf fiber hydrogel and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116082666A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118165299A (en) * | 2024-05-15 | 2024-06-11 | 中国科学院过程工程研究所 | Lignocellulose full-component hydrogel and preparation method and application thereof |
-
2022
- 2022-12-07 CN CN202211567689.7A patent/CN116082666A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118165299A (en) * | 2024-05-15 | 2024-06-11 | 中国科学院过程工程研究所 | Lignocellulose full-component hydrogel and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Campano et al. | Enhancement of the fermentation process and properties of bacterial cellulose: a review | |
| Qin | Alginate fibres: an overview of the production processes and applications in wound management | |
| CN106478825B (en) | Method for preparing oxidized cellulose for hemostasis in ramie oxidation degumming process | |
| CN102877287B (en) | Preparation method of halamine-containing antibacterial cellulose fabric | |
| CN104631118B (en) | A kind of absorbable antibacterial alginate fibre | |
| CN116082666A (en) | Pineapple leaf fiber hydrogel and preparation method thereof | |
| CN105061606A (en) | Method for preparing adsorbable oxycellulose through ramie oxidation degumming process | |
| CN105288734A (en) | Composite crosslinked type I collagen membrane and preparation method thereof | |
| CN106478963A (en) | Flaxseed gum/cellulose composite aquogel and preparation method thereof | |
| CN111320769A (en) | PH and redox dual-response drug-loaded hydrogel and preparation method and application thereof | |
| CN108547147B (en) | Method for modifying chitosan fiber in swelling state | |
| CN104262690A (en) | Nano lotus fiber/alginate porous material and preparation method thereof | |
| KR20210117234A (en) | Nano bio complex film and fabricating method of the same | |
| CN103951757A (en) | Medical absorbable oxycellulose material and preparation method thereof | |
| CN111205494B (en) | Preparation method and application of tobacco stem regenerated cellulose antibacterial film | |
| CN111777832A (en) | Recyclable environment-friendly plastic film formula | |
| CN111234265A (en) | Preparation method of medical multifunctional hydrogel dressing | |
| CN114908568B (en) | Ligament fiber constructed by natural polymer and preparation method thereof | |
| AU2021100253A4 (en) | Lignin feed additive and preparation method and use thereof | |
| CN108530927B (en) | Preparation method of wood fiber transparent high-strength composite material | |
| FI129257B (en) | Method for cellulose derivatization | |
| JPH0241473A (en) | Antimicrobial yarn using chitosan compound and production thereof | |
| CN105399978B (en) | A kind of polyethylene terephthalate（PET）The process of antibacterial surface processing | |
| CN108939133A (en) | A kind of fibroin shield traumatic material and preparation method thereof that antibacterial heal-promoting closes | |
| CN115198526A (en) | Preparation method of photocatalytic antibacterial polypropylene non-woven material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |