CN115142153B - Method for preparing solvent-resistant fiber from amino-containing indissolvable polymer solution and application of solvent-resistant fiber - Google Patents
Method for preparing solvent-resistant fiber from amino-containing indissolvable polymer solution and application of solvent-resistant fiber Download PDFInfo
- Publication number
- CN115142153B CN115142153B CN202210729639.8A CN202210729639A CN115142153B CN 115142153 B CN115142153 B CN 115142153B CN 202210729639 A CN202210729639 A CN 202210729639A CN 115142153 B CN115142153 B CN 115142153B
- Authority
- CN
- China
- Prior art keywords
- amino
- indissolvable
- solution
- solvent
- polymer
- 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.)
- Active
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F4/00—Monocomponent artificial filaments or the like of proteins; Manufacture thereof
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/76—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
Abstract
The scheme discloses a method for preparing solvent-resistant fibers by using an amino-containing indissolvable polymer solution in the technical field of fiber preparation, wherein the amino-containing indissolvable polymer solution is in a solution state of amino-containing indissolvable polymer combined with carbonate and bicarbonate; the preparation method comprises the following steps: (1) placing an amino-containing indissolvable polymer solution in a spinning machine; (2) Extruding the amino group-containing insoluble polymer solution from a spinning hole, passing the extruded amino group-containing insoluble polymer solution through a channel of a spinning machine at the temperature of 10-300 ℃, wherein the stretching ratio of fibers leaving a spray head is 0.5-20, and the dried fibers are solvent-resistant fibers. The solvent-resistant fiber prepared by the method has the characteristics of water resistance, organic solvent resistance, high density and high strength, and can be widely used as medical, food, beauty, health care, chemical and agricultural fiber materials.
Description
Technical Field
The invention belongs to the technical field of fiber preparation, and particularly relates to a method for preparing solvent-resistant fibers from an amino-containing indissolvable polymer solution and application thereof.
Background
Among the amino group-containing insoluble (poorly water-soluble) polymers, chitosan (CS), type I collagen, linear polyethylenimine, polyamide, silk fibroin, and polypeptides are typically represented, and are widely used in various fields such as medical treatment, food, beauty treatment, health care, chemical industry, agriculture, and the like. However, the amino group-containing insoluble polymer contains a large number of intramolecular and intermolecular hydrogen bonds, so that the amino group-containing insoluble polymer is often not directly soluble in water or an organic solvent, and thus the amino group-containing insoluble polymer fiber is difficult to prepare by dry spinning in which the solvent is directly volatilized and removed.
Taking Chitosan (CS) as an example, CS is taken as a biosafety natural degradable material, and a fiber product of CS has excellent hydrophilic property and degradability, and has great application potential in the fields of biosafety and biomedical materials such as dressing, wound suture and the like. The preparation of CS fibers is limited by the fact that CS raw materials are usually dissolved in an acetic acid solution and other auxiliary solvents, and in the CS solution spinning process, acid-base neutralization reaction is carried out by a coagulating liquid and an acidic substance (acetic acid) for dissolving CS, so that CS fibers insoluble in water and organic solvents can be obtained after washing. CS fibers based on acid-base neutralization reaction can only be prepared by wet spinning and dry-wet spinning. However, wet spinning and dry-wet spinning are more costly and complex than the most commercially used dry spinning. In the wet spinning and dry-wet spinning processes, the operation of neutralizing acidic substances in CS by using a coagulating liquid can lead CS fibers to contain a large number of pore structures, and the compactness and mechanical strength of the fibers are affected. Therefore, the biggest problem of CS fiber as degradable wound suture at present is that the mechanical strength is insufficient, so that the use requirement is difficult to meet. The dry spinning can obtain a denser fiber structure, and if CS solution can be used for dry spinning, the problems that the CS fiber has poor mechanical strength and is difficult to popularize and use at present are expected to be solved.
At present, the amino-containing indissoluble polymer is dissolved in a solutionizing substance to be spun, however, the common acidic or alkaline solutionizing substance is difficult to remove by a dry spinning volatile solvent process, so that the amino-containing indissoluble polymer fiber has no water resistance and solvent resistance and contains a large amount of biocompatible solutionizing substance impurities. Therefore, in order to prepare the water-resistant amino-containing insoluble polymer fiber by dry spinning, it is necessary to ensure that substances helping to dissolve the amino-containing insoluble polymer can be completely or partially removed in the process of volatilizing the solvent, and in the field of biomedical materials, substances helping to dissolve the amino-containing insoluble polymer preferably have good biocompatibility, and even a small amount of residues can ensure that the amino-containing insoluble polymer fiber can be used as a biomedical material, but no corresponding solving means is found at present.
Disclosure of Invention
The invention aims to provide a method for preparing solvent-resistant fibers from an amino-containing indissolvable polymer solution, so as to prepare the solvent-resistant fibers from the amino-containing indissolvable polymer solution through dry spinning.
The method for preparing the solvent-resistant fiber by the amino-containing indissolvable polymer solution in the scheme is that the amino-containing indissolvable polymer solution is in a solution state of amino-binding carbonate and bicarbonate.
In the scheme, because the amino-containing indissolvable polymer solution is in a solution state of amino-containing indissolvable polymer combined with carbonate and bicarbonate, in the process of preparing the solvent-resistant fiber, besides the solution of amino-containing indissolvable polymer combined with carbonate and bicarbonate is dried to become fiber, chemical reaction of removing carbonate and bicarbonate also occurs, so that the prepared solvent-resistant fiber has the characteristics of high density and high strength. According to the scheme, the solution obtained by combining carbonate and bicarbonate with the amino-containing indissolvable polymer can be directly subjected to dry spinning to prepare the fiber product.
Further, the amino-containing insoluble polymer is at least one of chitosan, type I collagen, linear polyethylenimine, polyamide, silk fibroin and polypeptide materials. Chitosan (CS), type I collagen, linear polyethylenimine, polyamide, silk fibroin and polypeptide materials belong to typical amino-containing indissolvable polymers, and the solvent-resistant fibers prepared by the materials can be widely applied to various fields of medical treatment, food, beauty treatment, health care, chemical industry, agriculture and the like.
Further, when the solvent-resistant fiber is prepared from the amino-containing insoluble polymer solution, wet spinning, dry-wet spinning or dry spinning is adopted.
In the process of preparing the fiber by wet spinning or dry-wet spinning, a coagulating liquid capable of removing or neutralizing carbonate and bicarbonate is adopted. Since this method is not different from the conventional method for preparing CS fibers in principle, a detailed description thereof will be omitted.
Further, when the amino group-containing indissolvable polymer solution is used for preparing solvent-resistant fibers through dry spinning, the method comprises the following steps:
(1) Placing the amino-containing indissoluble polymer solution in a spinning machine;
(2) Extruding the amino group-containing insoluble polymer solution from a spinning hole, passing the extruded amino group-containing insoluble polymer solution through a channel of a spinning machine at the temperature of 10-300 ℃, wherein the stretching ratio of fibers leaving a spray head is 0.5-20, and the dried fibers are solvent-resistant fibers.
In the dry spinning process, the amino-containing insoluble polymer aqueous solution loses part or all of carbonate and bicarbonate in the form of carbon dioxide gas, so that the solvent-resistant amino-containing insoluble polymer fiber is obtained. Unlike wet spinning and dry-wet spinning, the preparation of amino-containing insoluble polymer fiber by dry spinning does not need coagulating liquid, and solvent-resistant fiber product can be obtained through drying treatment in the spinning process.
Further, when the amino-containing indissoluble polymer solution passes through the channel of the dry spinning machine, hot air is introduced into the channel, the temperature of the hot air is 10-300 ℃, and the flow rate of the hot air is 0.5-15 m/s. The heat-containing indissoluble polymer solution in the channel is heated by adopting a hot air mode, so that the heat can be ensured to be dispersed into the indissoluble polymer solution more uniformly, and the volatilization speed and uniformity of the water in the indissoluble polymer solution are improved.
Further, in the amino group-containing indissolvable polymer solution, the solid content of the amino group-containing indissolvable polymer is 0.5% -15%. The solid content of the amino-containing indissolvable polymer in the amino-containing indissolvable polymer solution is 0.5-15% which is favorable for the forming of solvent-resistant fibers.
Further, the amino group-containing poorly soluble polymer solution is prepared by the following method: firstly, dissolving an amino-containing indissoluble polymer through the existing cosolvent to obtain a transition solution, then dropwise adding salt or acid containing weak acid radical ions into the transition solution in a stirring state to obtain an amino-containing indissoluble polymer combined weak acid radical ion solution, then adding solvents (containing water or mixed with water) with different gradient concentrations to extract or dialyze to remove non-amino-containing indissoluble polymer components to obtain a solution containing only the amino-containing indissoluble polymer and the solvent, finally adding carbonic acid or carbon dioxide to obtain a solution containing the amino-containing indissoluble polymer combined with carbonate radicals and bicarbonate radicals, wherein the total molar weight of the carbonate radicals and the bicarbonate radicals is smaller than the molar weight of nitrogen elements in the Yu Hanan-base indissoluble polymer.
Further, the solubles are acid or alkaline solutions; when acid is used as a dissolution assisting substance, salt containing weak acid radical ions is dropwise added into the transition solution, wherein the reactivity of the weak acid radical ions of the salt is weaker than that of acid radical ions of the dissolution assisting substance, and the reactivity of the acid radical ions of the dissolution assisting substance is stronger than that of carbonic acid radical and bicarbonate radical; when the alkaline solution is used as a dissolution assistant, an excessive amount of acid containing weak acid radical ions is added dropwise to the transition solution.
When the dissolution assisting substance is acid, as the reactivity of weak acid radical ions of the salt is weaker than that of acid radical ions of the dissolution assisting substance, the cation containing the weak acid radical salt can be combined with the acid radical ions of the dissolution assisting substance, so that the weak acid radical ions are combined with the amino-containing indissolvable polymer and kept in a solution state; when the solutionizing agent is an alkaline solution, an excessive amount of acid consisting of weak acid ions is added, the acid can react with alkali to generate salt with weak acid ions, and in addition, the excessive acid is combined with an amino-containing indissolvable polymer to obtain a solution state of combining weak acid ions with amino.
The solvent-resistant fiber prepared by the invention can be widely used as medical, food, beauty, health care, chemical industry and agricultural fiber materials due to the characteristics of difficult water solubility, high density and high strength, and especially as biomedical fiber materials.
Drawings
FIG. 1 is CS-CO 2 Schematic diagram of preparation process of solution;
FIG. 2 shows the bicarbonate radical from CS-CO 2 Schematic diagram of chemical formula change of removal;
FIG. 3 is a CS-CO in example 2 of the present invention 2 Preparing an infrared spectrum (FTIR) of CS fibers by dry spinning the solution;
FIG. 4 is a graph showing the tensile strength of CS fibers prepared in examples 1 to 4 of the present invention;
FIG. 5 is a graph showing the cytotoxicity test of the extract of CS fiber prepared in example 2 of the present invention with respect to L929.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following specific embodiments. It is to be noted that all of these examples are for further explanation of the present invention and should not be construed as limiting the present invention. Some insubstantial modifications and adaptations of the invention as described above would be within the scope of the invention by those skilled in the art in light of the foregoing disclosure.
The invention relates to a novel method for preparing solvent-resistant fibers by dry spinning of an amino-containing insoluble polymer solution, which is characterized in that Chitosan (CS) is taken as one of typical representatives of amino-containing insoluble (water-insoluble) polymers.
A、CS-CO 2 Preparation of the solution
Firstly, dissolving an amino-containing indissoluble polymer through the existing cosolvent to obtain a transition solution, then dropwise adding salt or acid containing weak acid radical ions into the transition solution in a stirring state to obtain an amino-combined weak acid radical ion solution containing the amino indissoluble polymer, wherein the weak acid radical ions are weak acid radical ions which are different from the existing weak acid radical ions combined with different types of amino indissoluble polymers to obtain the solution, then adding solvents with different gradient concentrations to extract or dialyze to remove non-amino indissoluble polymer components to obtain a solution containing only the amino indissoluble polymer and the solvent, and finally adding carbonic acid or carbon dioxide to obtain a solution combining the amino indissoluble polymer with carbonate and bicarbonate, wherein the total molar weight of the carbonate and the bicarbonate is smaller than the molar weight of nitrogen in the Yu Hanan-group indissoluble polymer. One of the methods for preparing a solution of CS-bound bicarbonate and bicarbonate is described in detail below.
Firstly, 0.7mmol of 1% acetic acid is dropwise added into 1mmol of chitosan raw material (CS-raw material) in a stirring state, the molecular weight of the CS-raw material is 1000kDa, and the CS-raw material is stirred at 0-100 ℃ until the CS-raw material is thoroughly dissolved. At this time, the amino groups on the acetic acid aqueous solution and CS act to break the intramolecular and intermolecular hydrogen bonds of CS, and the resulting solution is CS-HOAc (transition solution). Dropwise adding 0.73mmol of ammonium bicarbonate (NH) into the CS-HOAc solution in a stirred state 4 HCO 3 ) Aqueous solution (salt of weak acid ion), ammonium activity of ammonium bicarbonate is higher than amino group on CS, so acetic acid combined with CS can be replaced; and hydrolyzed carbonic acidThe hydrogen radical and carbonate components can be combined with chitosan to maintain a stable solution state. After the ammonium bicarbonate is added dropwise, the reaction is carried out for 2 hours at the temperature of 5-80 ℃. HOAc and NH during the whole reaction 4 HCO 3 The molar amount of (c) may vary. Excess bicarbonate and carbonate in the ammonium bicarbonate will be released as carbon dioxide gas. The ammonium acetate impurity is formed by combining the ammonium radical of acetic acid and ammonium bicarbonate, and the solution (CS solution) only containing CS and water can be obtained after purification by extraction or dialysis, and the solution (CS-CO) which is formed by combining carbonate radical and bicarbonate radical with the amino radical of CS and keeps the liquid state can be obtained by introducing carbon dioxide or adding carbonic acid into the CS solution 2 Solutions, i.e. solutions of amino-containing poorly soluble polymers). CS-CO 2 The preparation process of the solution is shown in figure 1.
In addition to CS, other solutions containing amino-insoluble polymers (such as type I collagen, linear polyethylenimine, polyamide, silk fibroin and polypeptides) combined with carbonate and bicarbonate are prepared by the same method as CS-CO 2 The preparation method of the solution is similar, namely, the amino-containing indissolvable polymer is combined with weak acid radical ions, then impurities are removed by means of dialysis or extraction, and carbon dioxide or carbonic acid is added into the solution, so that the aqueous solution of the amino-containing indissolvable polymer combined with carbonate radicals or bicarbonate radicals can be obtained.
Examples 1 to 12
B. Preparation of CS fibers
CS-CO fully dissolved in the invention 2 The solution is extruded into filaments through a spinneret with a certain diameter through a spinneret hole by a metering pump of a spinning machine, then heated by hot air in a channel, and stretched and curled at a certain speed to obtain CS fibers which are insoluble in water and completely or partially free of carbonate and bicarbonate. Examples 1 to 12 the parameters for the preparation of amino group-containing poorly soluble polymer solvent resistant fibers are shown in table 1:
TABLE 1
Note that: NH-R represents an amino-containing poorly soluble polymer.
The methods for preparing CS fibers were consistent for examples 1-7, except that the molecular weight of the CS material, or parameters of the CS fiber forming process, could be adjusted and varied. The principle of removing the solvent and all or part of carbonate and bicarbonate by dry spinning for the non-CS amino group-containing insoluble polymer in examples 8 to 12 is the same as that in examples 1 to 7, and a detailed description of the CS fiber production process will be given here by way of example 2.
The specific practice is as follows:
CS-CO with molecular weight of 500kDa and solid content of 2% in room temperature environment 2 The solution was passed through a dosage pump of a dry spinning apparatus through a spinneret with a spinneret orifice diameter of 0.1 mm. CS-CO through spinneret 2 The solution was passed through a tunnel in a dry spinning machine at a flow rate of 3m/s and a temperature of 95℃in hot air, and the fibers converted from CS solution were treated at a crimping speed of 300 m/min. In the whole process, except CS-CO 2 Drying of the solution becomes a fiber and chemical reactions of carbonate and bicarbonate removal also take place. The chemical formula change of the removal of bicarbonate from chitosan is shown in the figure 2, and arrows in the figure 2 point to hydrogen bonds in CS molecules or among molecules (note: the figure only illustrates bicarbonate (HCO 3-) and the principle of removing the bicarbonate is similar and is not repeated).
C、CS-CO 2 Solution is subjected to dry spinning to obtain infrared spectrum (FTIR) of CS fiber
As shown in FIG. 3 (in the figure, CS-CO 2 The solution is prepared by freeze drying CS combined with carbonate and bicarbonate, and CS fiber is CS-CO 2 Obtained by dry spinning of the solution), CS-CO 2 The amino groups and carbonate and bicarbonate in the solution form a carbamate structure, thus forming an absorption peak structure that is significantly different from the CS-starting material. 1649. 1556, 1407 and 1373cm -1 Is an amino cation (-NH) + ) C=o for the urethane anion, and symmetrical and asymmetrical vibration absorption peaks for the urethane anion. Removing solvent and carbonate by dry spinning of CS combined carbonate and bicarbonate solutionAfter bicarbonate radical, the carbamate group was not detected by infrared spectrum of CS fiber, and the peak pattern was almost identical to CS raw material, indicating that a fiber of pure CS structure was obtained.
The CS fibers obtained by dry spinning in examples 1 to 7 were all obtained without distinction from the CS fibers in example 2 in the IR spectrum.
D. Tensile Strength of CS fiber
The CS fibers prepared in examples 1 to 4 were subjected to a tensile strength test by a yarn extensometer at a grip distance of 250mm, a pretension of 0.1N/dtex and a stretching speed of 250mm/min, and the test results are shown in FIG. 4. In the dry spinning conditions of examples 1 to 4, the tensile strength of the CS fibers prepared was increased with an increase in the solid content, when CS-CO 2 When the CS solid content in the solution is increased to 3%, the strength of CS fibers obtained by dry spinning is highest, and the CS fibers reach about 2.5cN/dtex. The solids content of the CS solution was further increased to 4%, and the tensile strength of the CS fibers was rather reduced to some extent. As can be seen from FIG. 4, the present invention can produce CS fibers excellent in tensile strength by dry spinning CS solution.
E. Application experiment
1g of the CS fiber prepared in example 2 was placed in 100mL of Phosphate Buffered Saline (PBS) and soaked at 37℃for 72 hours to obtain a 100% leaching solution. While 50% extract was 100% extract diluted one-fold with PBS. Taking mouse fibroblast (L929) with good growth state of the third generation, using low sugar DMEM complete medium containing 10% foetal calf serum, and heating at 37deg.C and 5% CO 2 The culture was carried out in an incubator for 24 hours, the medium in the wells was discarded, and 100. Mu.L of a mixture of the leaching solution and the complete medium was added in a ratio of 1:9. After further culturing for 0, 12, 24, 48 and 72 hours, the cells were treated with CCK-8 reagent, and then OD values were measured at 450nm using a microplate reader and the relative proliferation rates of the cells were calculated, and the results are shown in FIG. 5.
From the cytotoxicity of the CS fiber extract to L929 in fig. 5, there was no statistical difference in cell viability for L929 over 72h relative to the hard control, either 100% extract or 50% extract. CS fibers do not exhibit cytotoxicity, meeting the safety requirements of biological materials. Therefore, the CS fiber prepared by dry spinning has high cell safety and great potential for being used as biomedical fiber material.
Claims (5)
1. The method for preparing the solvent-resistant fiber by the amino-containing indissolvable polymer solution is characterized by comprising the following steps of: the amino-containing indissoluble polymer solution is in a solution state of amino-containing indissoluble polymer combined with carbonate and bicarbonate; the amino-containing insoluble polymer solution is prepared by the following method: firstly, dissolving an amino-containing indissolvable polymer through the existing cosolvent to obtain a transition solution, then dropwise adding salt or acid containing weak acid radical ions into the transition solution in a stirring state to obtain an amino-containing indissolvable polymer solution combined with weak acid radical ions, then adding solvents with different gradient concentrations for extraction or dialysis to remove non-amino-containing indissolvable polymer components to obtain a solution containing only the amino-containing indissolvable polymer and the solvent, and finally adding carbonic acid or carbon dioxide to obtain a solution containing the amino-containing indissolvable polymer combined with carbonate radicals and bicarbonate radicals, wherein the total molar weight of the carbonate radicals and the bicarbonate radicals is smaller than the molar weight of nitrogen elements in the indissolvable polymer of Yu Hanan groups; the amino-containing indissolvable polymer is at least one of chitosan, type I collagen, linear polyethylenimine, polyamide, silk fibroin and polypeptide polymer; when the solvent-resistant fiber is prepared from the amino-containing indissolvable polymer solution, wet spinning, dry-wet spinning or dry spinning is adopted; when the amino-containing indissoluble polymer solution is prepared, the solubles are acid or alkaline solution; when acid is used as a dissolution assisting substance, salt containing weak acid radical ions is dropwise added into the transition solution, wherein the reactivity of the weak acid radical ions of the salt is weaker than that of acid radical ions of the dissolution assisting substance, and the reactivity of the acid radical ions of the dissolution assisting substance is stronger than that of carbonic acid radical and bicarbonate radical; when the alkaline solution is used as a dissolution assistant, an excessive amount of acid containing weak acid radical ions is added dropwise to the transition solution.
2. The method for preparing solvent-resistant fiber by using the amino group-containing indissolvable polymer solution according to claim 1, wherein the method comprises the following steps: the solvent-resistant fiber is prepared by adopting dry spinning, which comprises the following steps:
(1) Placing the amino-containing indissoluble polymer solution in a spinning machine;
(2) Extruding the amino group-containing insoluble polymer solution from a spinning hole, passing the extruded amino group-containing insoluble polymer solution through a channel of a spinning machine at the temperature of 10-300 ℃, wherein the stretching ratio of fibers leaving a spray head is 0.5-20, and the dried fibers are solvent-resistant fibers.
3. The method for preparing solvent-resistant fiber by using the amino-containing insoluble polymer solution according to claim 2, wherein: when the amino-containing indissoluble polymer solution passes through a channel of a dry spinning machine, hot air is introduced into the channel, the temperature of the hot air is 10-300 ℃, and the flow rate of the hot air is 0.5-15 m/s.
4. A method for preparing solvent resistant fiber from amino group-containing insoluble polymer solution according to claim 3, wherein: in the amino group-containing indissolvable polymer solution, the solid content of the amino group-containing indissolvable polymer is 0.5% -15%.
5. The application of the solvent-resistant fiber in medical, food, beauty, health care, chemical or agricultural fiber materials is characterized in that: the solvent-resistant fiber is prepared by the method for preparing the solvent-resistant fiber from the amino-containing indissolvable polymer solution according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210729639.8A CN115142153B (en) | 2022-06-24 | 2022-06-24 | Method for preparing solvent-resistant fiber from amino-containing indissolvable polymer solution and application of solvent-resistant fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210729639.8A CN115142153B (en) | 2022-06-24 | 2022-06-24 | Method for preparing solvent-resistant fiber from amino-containing indissolvable polymer solution and application of solvent-resistant fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115142153A CN115142153A (en) | 2022-10-04 |
| CN115142153B true CN115142153B (en) | 2023-05-30 |
Family
ID=83408044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210729639.8A Active CN115142153B (en) | 2022-06-24 | 2022-06-24 | Method for preparing solvent-resistant fiber from amino-containing indissolvable polymer solution and application of solvent-resistant fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115142153B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7536962B2 (en) * | 2005-04-19 | 2009-05-26 | Kamterter Ii, L.L.C. | Systems for the control and use of fluids and particles |
| CN102168323A (en) * | 2011-02-24 | 2011-08-31 | 天津工业大学 | Method for preparing chitosan and chitin functional materials by taking ionic liquid as solvent |
| CN108948377B (en) * | 2017-05-18 | 2020-12-01 | 武汉大学 | Rapid dissolving method of chitosan and application thereof |
| CN109456421A (en) * | 2018-10-30 | 2019-03-12 | 江南大学 | A kind of preparation of water soluble chitosan material and application method |
| CN111519280B (en) * | 2019-02-01 | 2021-07-20 | 武汉大学 | Preparation method of chitosan fiber material |
| CN111748870B (en) * | 2019-03-29 | 2021-09-14 | 武汉大学 | Fiber material prepared from chitosan solution with pH value of 6-8 and preparation method thereof |
-
2022
- 2022-06-24 CN CN202210729639.8A patent/CN115142153B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115142153A (en) | 2022-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sanhueza et al. | One-step electrospun scaffold of dual-sized gelatin/poly-3-hydroxybutyrate nano/microfibers for skin regeneration in diabetic wound | |
| Wang et al. | Fabrication and characterization of electrospun gelatin-heparin nanofibers as vascular tissue engineering | |
| KR102110248B1 (en) | Collagen containing-plastic masterbatch, the manufacturing method thereof, the product therefrom, and application thereof | |
| ES2415161T3 (en) | Medical device and manufacturing procedure | |
| CN106591992B (en) | A kind of modified gelatin fiber | |
| US20130041407A1 (en) | Chitosan fiber | |
| Zamre et al. | Chemical cross-linking of chitosan/polyvinyl alcohol electrospun nanofibers | |
| CN112516372A (en) | Composite drug-loaded fiber for absorbable surgical suture | |
| CN111424425B (en) | Nano hemostatic and antibacterial composite material for vascular surgery and preparation method thereof | |
| Campiglio et al. | Electrospun ECM macromolecules as biomimetic scaffold for regenerative medicine: Challenges for preserving conformation and bioactivity | |
| CN115142153B (en) | Method for preparing solvent-resistant fiber from amino-containing indissolvable polymer solution and application of solvent-resistant fiber | |
| Nasser et al. | Hemostatic wound dressings based on drug loaded electrospun PLLA nanofibrous mats | |
| CN103993425A (en) | Preparing method of polycaprolactone-keratin composite nano fiber film | |
| JP6408409B2 (en) | Method for producing collagen fiber and method for producing high concentration collagen solution | |
| Nicolae et al. | Polymer fibers in biomedical engineering | |
| CN115010981B (en) | Solid product containing amino indissolvable polymer, preparation method and application thereof | |
| CN108042844A (en) | A kind of preparation method of suture | |
| KR102475486B1 (en) | Sodium Hyaluronate Salt Nano Fabric Sheet and Preparation Method thereof | |
| CN111455498A (en) | Preparation method and application of nanofiber | |
| CN106668932B (en) | Hemostatic material and preparation method and application thereof | |
| DE102011105369A1 (en) | Stable, aqueous protein solution or protein dispersion, process for the preparation of the stable, aqueous solution or dispersion and process for the production of moldings, fabrics, impregnations or coatings from the stable, aqueous protein solution or protein dispersion and their use | |
| JP7460071B2 (en) | Method for insolubilizing a fiber structure containing polyamino acid and method for producing a crosslinked fiber structure | |
| Kovalenko et al. | Electrospun Fibrous Materials Made of Collagen and Chitin Derivatives. | |
| CN108047466B (en) | Silk microneedle and preparation method thereof | |
| CN113622044A (en) | Method for preparing silk protein-based fiber by dry spinning, silk protein-based fiber prepared by same and application thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |