CN112501707A - Method for preparing wound dressing by montmorillonite intercalation polyacrylonitrile wet spinning - Google Patents
Method for preparing wound dressing by montmorillonite intercalation polyacrylonitrile wet spinning Download PDFInfo
- Publication number
- CN112501707A CN112501707A CN202011030606.1A CN202011030606A CN112501707A CN 112501707 A CN112501707 A CN 112501707A CN 202011030606 A CN202011030606 A CN 202011030606A CN 112501707 A CN112501707 A CN 112501707A
- Authority
- CN
- China
- Prior art keywords
- polyacrylonitrile
- fiber
- preparing
- wound dressing
- montmorillonite
- 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
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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/54—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polymers of unsaturated nitriles
-
- 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
- A61L15/18—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
-
- 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
- A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives 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
- A61L15/42—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
- A61L15/44—Medicaments
-
- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/004—Dyeing with phototropic dyes; Obtaining camouflage effects
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/70—Material containing nitrile groups
-
- 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
- A61L2300/442—Colorants, dyes
Abstract
The invention discloses a method for preparing wound dressing by montmorillonite intercalation polyacrylonitrile wet spinning, which belongs to the technical field of textile manufacturing, and the method comprises the steps of dispersing dry acrylic fibers in a solvent, preparing spinning stock solution by organic modified montmorillonite intercalation polyacrylonitrile, generating polyacrylonitrile nascent fiber by a spinneret plate, generating fiber by the nascent fiber through a coagulation bath, preparing polyacrylonitrile yarn with photosensitive antibacterial effect by adsorbing photosensitive dye by the polyacrylonitrile fiber, and finally weaving to prepare photosensitive antibacterial wound dressing, wherein the method is characterized in that: (1) directly utilizing acrylic fibers to prepare the wound dressing; (2) preparing polyacrylonitrile fiber by an organic modified montmorillonite intercalation polyacrylonitrile wet method; (3) the coagulating bath is a mixed solution of water and an organic solvent; (4) the method has the advantages of simple operation, easy operation of experimental equipment, no corrosiveness, easy recovery of coagulation bath liquid, low toxicity, good antibacterial effect and high repeatability.
Description
Technical Field
The invention relates to a method for preparing a wound dressing by wet spinning of montmorillonite intercalated polyacrylonitrile, in particular to a method for preparing a wound dressing by adsorbing a photosensitive dye by using organic modified montmorillonite intercalated polyacrylonitrile fibers prepared by a wet method.
Background
The polyacrylonitrile fiber is generally weaved into short fiber, mainly uses knitwear, woven fabrics, woollen blankets, tents, curtain box filter cloth and the like, the polyacrylonitrile fiber has large production total amount in synthetic fiber, but the boiling point of polyacrylonitrile is lower than the melting point, the melting method can not produce the polypropylene fiber, the wet method and the dry method are two main production modes at present, the dry spinning method has the advantages of simpler process and equipment, but has the defects of difficult solvent recovery and higher cost, and the environmental air pollution is serious due to the opportunistic property of the solvent, so the wet spinning method is still the main method for industrially producing the polyacrylonitrile fiber, the dyeing property of the polyacrylonitrile fiber is improved due to the addition of a third monomer, although polyacrylonitrile is dyed by cationic dye, the polyacrylonitrile is easy to color, but the polyacrylonitrile is poor in washing fastness and easy to decolor.
Montmorillonite is natural aluminosilicate ore with a layered structure, has good ion exchange capacity, can freely exchange with cations in a solution, has good affinity and compatibility with organic matters due to the good ion exchange capacity of the montmorillonite, and is used for adsorbing and fixing cation photosensitive dye by utilizing the characteristic of the montmorillonite to manufacture wound dressings.
Disclosure of Invention
The invention aims to provide a method for preparing a wound dressing by montmorillonite intercalated polyacrylonitrile wet spinning, which solves the problems that after the traditional bone-knitting soup is taken, the fracture part of a bone is slowly healed and the hardness of the bone cannot be enhanced.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention provides a method for preparing a wound dressing by montmorillonite intercalation polyacrylonitrile wet spinning, which comprises stock solution preparation, nascent fiber preparation, generated fiber preparation, yarn preparation and dressing preparation, and is characterized in that the method for preparing the wound dressing by montmorillonite intercalation polyacrylonitrile wet spinning comprises the following steps:
(1) preparing stock solution: dissolving the dried acrylic fibers and montmorillonite in a solvent to prepare a polyacrylonitrile fiber stock solution;
(2) preparing nascent fiber: then, the prepared polyacrylonitrile fiber stock solution is processed by a spinneret orifice plate to generate nascent fiber;
(3) preparing the generated fiber: cooling the prepared nascent fiber through a coagulating bath to generate fiber;
(4) preparing yarns: adsorbing the photosensitive dye by polyacrylonitrile fiber to prepare polyacrylonitrile yarn with photosensitive antibacterial effect;
(5) preparing the dressing: and weaving polyacrylonitrile yarn to obtain the photosensitive antibacterial wound dressing.
Preferably, in the stock solution preparation, acrylic fibers easy to dry are used as a main raw material, nitrogen and nitrogen-dimethyl formamide are used as a solvent to prepare a polymer stock solution with the mass percentage of 15-20%, the mass percentage ratio of polyacrylonitrile in the polymer stock solution is 15-30%, and the content of the organic modified montmorillonite is 2-3%.
Preferably, in the preparation of the nascent fiber, the polymer stock solution is added with organic modified montmorillonite with the mass percent of 2-5% of polyacrylonitrile, stirred and ultrasonically crushed by a magnetic stirrer, and then extruded into monofilament from a spinneret orifice on a spinneret plate to prepare the nascent fiber.
Preferably, in the preparation of the yarn, the prepared polyacrylonitrile fiber is soaked in 80-200 mg/L of cationic photosensitive dye for 12-72 h, and the polyacrylonitrile fiber is prepared after drying, wherein the cationic photosensitive dye mainly comprises methylene blue and porphyrin.
Preferably, in the preparation of the dressing, the prepared polyacrylonitrile yarn is woven on a sample machine to prepare the wound dressing.
Preferably, the solution selected by the coagulating bath is a mixed solution of nitrogen-nitrogen dimethyl formamide and water, wherein the proportion of surface water or underground water is controlled to be 30-70%.
Preferably, the stirring time of the magnetic stirrer is 8-12 h.
The invention has the beneficial effects that:
1. the preparation process of the wound dressing is short, and the polyacrylonitrile yarn is prepared by wet spinning, so that the process flow is greatly shortened compared with a normal spinning mode, the preparation efficiency of the wound dressing is improved, and the wound dressing has high economic benefit.
2. The invention adds the organic modified montmorillonite into the spinning solution prepared by the polyacrylonitrile fiber, greatly improves the defect that the polyacrylonitrile fiber is easy to decolor, utilizes the interlayer ion exchange property of the montmorillonite to ensure that the montmorillonite can be well dispersed in the polyacrylonitrile fiber, improves the heat resistance and the washability of the polyacrylonitrile yarn, and ensures the antibacterial effect and the recycling property of the wound dressing.
3. The invention effectively utilizes the antibacterial effect of the photosensitive dye and the good adsorption performance of the polyacrylonitrile fiber intercalated by the organic modified montmorillonite to the cationic dye, is simpler and easy to operate compared with the original traditional wound dressing, and has great market popularization potential.
Drawings
FIG. 1 is a flow chart of the production process of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
A25 ml blue-capped vial was charged with 17 ml of nitrogen-nitrogen dimethylformamide. Then adding 3 g of polyacrylonitrile powder and 5% of organic modified montmorillonite, ultrasonically crushing, and stirring for 12 h on a magnetic stirrer to prepare spinning stock solution. Then extruding the mixture by a spinneret plate to generate nascent fiber, and generating polyacrylonitrile fiber after the nascent fiber passes through 30 ℃ and 30 mass percent of nitrogen dimethylformamide coagulating bath.
And then the nascent polyacrylonitrile fiber is subjected to three times of water washing and drafting to obtain the polyacrylonitrile fiber.
The winding speed of the polyacrylonitrile fiber is 30 m/min.
And soaking the polyacrylonitrile fiber in a cationic photosensitive dye methylene blue solution with the concentration of 80 mg/L for 48 hours to prepare the wound dressing yarn with the antibacterial function. Finally, the wound dressing is prepared by weaving the wound dressing yarn on a small sample machine.
Example 2
A25 ml blue-capped vial was charged with 17 ml of nitrogen-nitrogen dimethylformamide. Then adding 3 g of polyacrylonitrile powder and 5% of organic modified montmorillonite, ultrasonically crushing, and stirring for 12 h on a magnetic stirrer to prepare spinning stock solution. Then extruding the mixture by a spinneret plate to generate nascent fiber, and generating polyacrylonitrile fiber after 30 ℃ and 30 mass percent of nitrogen and dimethylformamide coagulation bath.
And then the nascent polyacrylonitrile fiber is subjected to three times of water washing and drafting to obtain the polyacrylonitrile fiber.
The winding speed of the polyacrylonitrile fiber is 40 m/min.
And soaking the polyacrylonitrile fiber in a cationic photosensitive dye methylene blue solution with the concentration of 80 mg/L for 48 hours to prepare the wound dressing yarn with the antibacterial function. Finally, the wound dressing is prepared by weaving the wound dressing yarn on a small sample machine.
Example 3
A25 ml blue-capped vial was charged with 17 ml of nitrogen-nitrogen dimethylformamide. Then adding 3 g of polyacrylonitrile powder and 5% of organic modified montmorillonite, ultrasonically crushing, and stirring for 12 h on a magnetic stirrer to prepare spinning stock solution. Then extruding the mixture by a spinneret plate to generate nascent fiber, and generating polyacrylonitrile fiber after 30 ℃ and 30 mass percent of nitrogen and dimethylformamide coagulation bath.
And then the nascent polyacrylonitrile fiber is subjected to three times of water washing and drafting to obtain the polyacrylonitrile fiber.
The winding speed of the polyacrylonitrile fiber is 50 m/min.
And soaking the polyacrylonitrile fiber in a cationic photosensitive dye methylene blue solution with the concentration of 80 mg/L for 48 hours to prepare the wound dressing yarn with the antibacterial function. Finally, the wound dressing is prepared by weaving the wound dressing yarn on a small sample machine.
Example 4
A25 ml blue-capped vial was charged with 17 ml of nitrogen-nitrogen dimethylformamide. Then adding 3 g of polyacrylonitrile powder and 5% of organic modified montmorillonite, ultrasonically crushing, and stirring for 12 h on a magnetic stirrer to prepare spinning stock solution. Then extruding the mixture by a spinneret plate to generate nascent fiber, and generating polyacrylonitrile fiber after the nascent fiber passes through a nitrogen and dimethyl formamide coagulation bath with the mass fraction of 30% at the temperature of 40 ℃.
And then the nascent polyacrylonitrile fiber is subjected to three times of water washing and drafting to obtain the polyacrylonitrile fiber.
The winding speed of the polyacrylonitrile fiber is 50 m/min.
And soaking the polyacrylonitrile fiber in a cationic photosensitive dye methylene blue solution with the concentration of 80 mg/L for 48 hours to prepare the wound dressing yarn with the antibacterial function. Finally, the wound dressing is prepared by weaving the wound dressing yarn on a small sample machine.
Example 5
A25 ml blue-capped vial was charged with 17 ml of nitrogen-nitrogen dimethylformamide. Then adding 3 g of polyacrylonitrile powder and 5% of organic modified montmorillonite, ultrasonically crushing, and stirring for 12 h on a magnetic stirrer to prepare spinning stock solution. Then extruding the mixture by a spinneret plate to generate nascent fiber, and generating polyacrylonitrile fiber after the nascent fiber passes through a nitrogen and dimethyl formamide coagulation bath with the mass fraction of 30% at 50 ℃.
And then the nascent polyacrylonitrile fiber is subjected to three times of water washing and drafting to obtain the polyacrylonitrile fiber.
The winding speed of the polyacrylonitrile fiber is 50 m/min.
And soaking the polyacrylonitrile fiber in a cationic photosensitive dye methylene blue solution with the concentration of 80 mg/L for 48 hours to prepare the wound dressing yarn with the antibacterial function. Finally, the wound dressing is prepared by weaving the wound dressing yarn on a small sample machine.
Example 6
A25 ml blue-capped vial was charged with 17 ml of nitrogen-nitrogen dimethylformamide. Then adding 3 g of polyacrylonitrile powder and 5% of organic modified montmorillonite, ultrasonically crushing, and stirring for 12 h on a magnetic stirrer to prepare spinning stock solution. Then extruding the mixture by a spinneret plate to generate nascent fiber, and carrying out nitrogen-dimethyl formamide coagulation bath at the temperature of 60 ℃ and the mass fraction of 30% to generate polyacrylonitrile fiber.
And then the nascent polyacrylonitrile fiber is subjected to three times of water washing and drafting to obtain the polyacrylonitrile fiber.
The winding speed of the polyacrylonitrile fiber is 50 m/min.
And soaking the polyacrylonitrile fiber in a cationic photosensitive dye methylene blue solution with the concentration of 80 mg/L for 48 hours to prepare the wound dressing yarn with the antibacterial function. Finally, the wound dressing is prepared by weaving the wound dressing yarn on a small sample machine.
Example 7
A25 ml blue-capped vial was charged with 17 ml of nitrogen-nitrogen dimethylformamide. Then adding 3 g of polyacrylonitrile powder and 5% of organic modified montmorillonite, ultrasonically crushing, and stirring for 12 h on a magnetic stirrer to prepare spinning stock solution. Then extruding the mixture by a spinneret plate to generate nascent fiber, and generating polyacrylonitrile fiber after 40 ℃ and 40 mass percent of nitrogen and nitrogen-dimethylformamide coagulation bath.
And then the nascent polyacrylonitrile fiber is subjected to three times of water washing and drafting to obtain the polyacrylonitrile fiber.
The winding speed of the polyacrylonitrile fiber is 50 m/min.
And soaking the polyacrylonitrile fiber in a cationic photosensitive dye methylene blue solution with the concentration of 80 mg/L for 48 hours to prepare the wound dressing yarn with the antibacterial function. Finally, the wound dressing is prepared by weaving the wound dressing yarn on a small sample machine.
Example 8
A25 ml blue-capped vial was charged with 17 ml of nitrogen-nitrogen dimethylformamide. Then adding 3 g of polyacrylonitrile powder and 5% of organic modified montmorillonite, ultrasonically crushing, and stirring for 12 h on a magnetic stirrer to prepare spinning stock solution. Then extruding the mixture by a spinneret plate to generate nascent fiber, and generating polyacrylonitrile fiber after nitrogen and dimethylformamide with mass fraction of 50 percent are subjected to coagulation bath at 40 ℃.
And then the nascent polyacrylonitrile fiber is subjected to three times of water washing and drafting to obtain the polyacrylonitrile fiber.
The winding speed of the polyacrylonitrile fiber is 50 m/min. And soaking the polyacrylonitrile fiber in a cationic photosensitive dye methylene blue solution with the concentration of 80 mg/L for 48 hours to prepare the wound dressing yarn with the antibacterial function. Finally, the wound dressing is prepared by weaving the wound dressing yarn on a small sample machine.
Example 9
A25 ml blue-capped vial was charged with 17 ml of nitrogen-nitrogen dimethylformamide. Then adding 3 g of polyacrylonitrile powder and 5% of organic modified montmorillonite, ultrasonically crushing, and stirring for 12 h on a magnetic stirrer to prepare spinning stock solution. Then extruding the mixture by a spinneret plate to generate nascent fiber, and carrying out nitrogen-dimethyl formamide coagulation bath at 40 ℃ and with the mass fraction of 60% to generate polyacrylonitrile fiber.
And then the nascent polyacrylonitrile fiber is subjected to three times of water washing and drafting to obtain the polyacrylonitrile fiber.
The winding speed of the polyacrylonitrile fiber is 50 m/min
And soaking the polyacrylonitrile fiber in a cationic photosensitive dye methylene blue solution with the concentration of 80 mg/L for 48 hours to prepare the wound dressing yarn with the antibacterial function. Finally, the wound dressing is prepared by weaving the wound dressing yarn on a small sample machine.
Example 10
A25 ml blue-capped vial was charged with 17 ml of nitrogen-nitrogen dimethylformamide. Then adding 3 g of polyacrylonitrile powder and 5% of organic modified montmorillonite, ultrasonically crushing, and stirring for 12 h on a magnetic stirrer to prepare spinning stock solution. Then extruding the mixture by a spinneret plate to generate nascent fiber, and generating polyacrylonitrile fiber after the nascent fiber passes through a nitrogen and dimethyl formamide coagulation bath with the mass fraction of 70 percent at the temperature of 40 ℃.
And then the nascent polyacrylonitrile fiber is subjected to three times of water washing and drafting to obtain the polyacrylonitrile fiber.
The winding speed of the polyacrylonitrile fiber is 50 m/min.
And soaking the polyacrylonitrile fiber in a cationic photosensitive dye methylene blue solution with the concentration of 80 mg/L for 48 hours to prepare the wound dressing yarn with the antibacterial function. Finally, the wound dressing is prepared by weaving the wound dressing yarn on a small sample machine.
Claims (8)
1. A method for preparing a wound dressing by montmorillonite intercalation polyacrylonitrile wet spinning comprises stock solution preparation, nascent fiber preparation, generated fiber preparation, yarn preparation and dressing preparation, and is characterized in that the method for preparing the wound dressing by montmorillonite intercalation polyacrylonitrile wet spinning comprises the following steps:
preparing stock solution: dissolving the dried acrylic fibers and montmorillonite in a solvent to prepare a polyacrylonitrile fiber stock solution;
preparing nascent fiber: then, the prepared polyacrylonitrile fiber stock solution is processed by a spinneret orifice plate to generate nascent fiber;
preparing the generated fiber: cooling the prepared nascent fiber through a coagulating bath to generate fiber;
preparing yarns: adsorbing the photosensitive dye by polyacrylonitrile fiber to prepare polyacrylonitrile yarn with photosensitive antibacterial effect;
preparing the dressing: and weaving polyacrylonitrile yarn to obtain the photosensitive antibacterial wound dressing.
2. The method for preparing the wound dressing by the wet spinning of the montmorillonite intercalated polyacrylonitrile according to claim 1, wherein in the preparation of the stock solution, acrylic fibers easy to dry are used as a main raw material, nitrogen and nitrogen-dimethylformamide are used as a solvent to prepare a polymer stock solution with the mass percentage of 15-20%, the mass percentage of the polyacrylonitrile in the polymer stock solution is 15-30%, and the content of the organic modified montmorillonite is 2-3%.
3. The method for preparing the wound dressing by the wet spinning of the montmorillonite intercalated polyacrylonitrile according to claim 1, wherein in the preparation of the nascent fiber, the polymer stock solution is added with the organic modified montmorillonite with the mass percent of 2-5% of the polyacrylonitrile, the mixture is stirred by a magnetic stirrer and ultrasonically crushed, and then the mixture is extruded from a spinneret orifice on a spinneret plate to form a monofilament so as to prepare the nascent fiber.
4. The method for preparing the wound dressing by the wet spinning of the montmorillonite intercalated polyacrylonitrile according to claim 1, wherein in the preparation of the generated fiber, the prepared nascent fiber is subjected to coagulation bath at 20-80 ℃ for three times and then is drawn to prepare the polyacrylonitrile fiber.
5. The method for preparing the wound dressing by the wet spinning of the montmorillonite intercalated polyacrylonitrile according to claim 1, wherein in the preparation of the yarn, the prepared polyacrylonitrile fiber is soaked in 80-200 mg/L of cationic photosensitive dye for 12-72 h, and the polyacrylonitrile yarn is prepared after drying, wherein the cationic photosensitive dye mainly comprises methylene blue and porphyrin.
6. The method for preparing the wound dressing by the wet spinning of the montmorillonite intercalated polyacrylonitrile as claimed in claim 1, wherein in the preparation of the dressing, the prepared polyacrylonitrile yarn is woven on a sample machine to prepare the wound dressing.
7. The method for preparing the wound dressing by the wet spinning of the montmorillonite intercalated polyacrylonitrile according to claim 1, wherein the solution selected by the coagulation bath is a mixed solution of nitrogen-dimethyl formamide and water, wherein the proportion of surface water or underground water is controlled to be 30-70%.
8. The method for preparing the wound dressing by the wet spinning of the montmorillonite intercalated polyacrylonitrile according to claim 1, wherein the stirring time of the magnetic stirrer is 8-12 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030606.1A CN112501707A (en) | 2020-09-27 | 2020-09-27 | Method for preparing wound dressing by montmorillonite intercalation polyacrylonitrile wet spinning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030606.1A CN112501707A (en) | 2020-09-27 | 2020-09-27 | Method for preparing wound dressing by montmorillonite intercalation polyacrylonitrile wet spinning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112501707A true CN112501707A (en) | 2021-03-16 |
Family
ID=74953680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011030606.1A Pending CN112501707A (en) | 2020-09-27 | 2020-09-27 | Method for preparing wound dressing by montmorillonite intercalation polyacrylonitrile wet spinning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112501707A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2921042A (en) * | 1954-04-07 | 1960-01-12 | Eastman Kodak Co | Acrylonitrile polymer compositions containing modified bentonite and fibers formed therefrom |
| US3597304A (en) * | 1968-03-25 | 1971-08-03 | Gen Mills Inc | Dyeing of cellulosic fibers with cationic dye and montmorillonite clay and resulting product |
| CN102418167A (en) * | 2011-10-11 | 2012-04-18 | 南通市田园装饰布有限公司 | Manufacturing technology for dyeing-free PET (Polyester) regenerated fiber |
| CN106498764A (en) * | 2016-11-07 | 2017-03-15 | 江南大学 | A kind of smooth power antimicrobial form acrylon dyed yarn and preparation method thereof |
| CN108499371A (en) * | 2018-04-24 | 2018-09-07 | 安徽农业大学 | The enhanced amidoxim modified polyacrylonitrile nanofiber membrane preparation method of montmorillonite |
| CN109056106A (en) * | 2018-08-09 | 2018-12-21 | 安徽农业大学 | A kind of thermostabilization, high-intensitive sizing phase transformation superfine fibre preparation method |
| CN111472066A (en) * | 2020-03-12 | 2020-07-31 | 绍兴标点纺织科技股份有限公司 | Method for producing anti-coronavirus acrylic fiber |
| CN111545180A (en) * | 2020-04-24 | 2020-08-18 | 陕西科技大学 | Preparation method of cellulose acetate modified montmorillonite composite nanofiber |
-
2020
- 2020-09-27 CN CN202011030606.1A patent/CN112501707A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2921042A (en) * | 1954-04-07 | 1960-01-12 | Eastman Kodak Co | Acrylonitrile polymer compositions containing modified bentonite and fibers formed therefrom |
| US3597304A (en) * | 1968-03-25 | 1971-08-03 | Gen Mills Inc | Dyeing of cellulosic fibers with cationic dye and montmorillonite clay and resulting product |
| CN102418167A (en) * | 2011-10-11 | 2012-04-18 | 南通市田园装饰布有限公司 | Manufacturing technology for dyeing-free PET (Polyester) regenerated fiber |
| CN106498764A (en) * | 2016-11-07 | 2017-03-15 | 江南大学 | A kind of smooth power antimicrobial form acrylon dyed yarn and preparation method thereof |
| CN108499371A (en) * | 2018-04-24 | 2018-09-07 | 安徽农业大学 | The enhanced amidoxim modified polyacrylonitrile nanofiber membrane preparation method of montmorillonite |
| CN109056106A (en) * | 2018-08-09 | 2018-12-21 | 安徽农业大学 | A kind of thermostabilization, high-intensitive sizing phase transformation superfine fibre preparation method |
| CN111472066A (en) * | 2020-03-12 | 2020-07-31 | 绍兴标点纺织科技股份有限公司 | Method for producing anti-coronavirus acrylic fiber |
| CN111545180A (en) * | 2020-04-24 | 2020-08-18 | 陕西科技大学 | Preparation method of cellulose acetate modified montmorillonite composite nanofiber |
Non-Patent Citations (1)
| Title |
|---|
| 高春涛等: "《PAN-O/MMT复合纳米纤维膜的制备及染料吸附性能》", 《水处理技术》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103046151B (en) | Graphene blend regenerated cellulose fiber and preparation method thereof | |
| CN110144658B (en) | Production method of composite yarn with effect of colored gray | |
| CN113956686B (en) | Carbon black dispersion and preparation method and application thereof | |
| CN103255488B (en) | Preparation method of high-strength viscose fiber | |
| CN109537088B (en) | Method for manufacturing different-shrinkage polyester low-stretch yarns | |
| CN102002772B (en) | Method for preparing polyacrylonitrile bamboo charcoal composite fiber by in-situ polymerization | |
| CN107761184B (en) | Stock solution coloring composite fiber and preparation method thereof | |
| CN106948052A (en) | A kind of flame-proof electrostatic resistance yarn and its fabric | |
| CN103184582B (en) | Preparation method of PVA composite high-strength high-modulus cellulose fiber | |
| CN104831392A (en) | High-strength low-elongation viscose and preparing method thereof | |
| WO2014040098A1 (en) | Spun-dyed modal fibres, use thereof and process for production thereof | |
| CN107083618A (en) | A kind of manufacture method of eyelet fabric | |
| CN107142593A (en) | The preparation method of anti bacteria natural silk fabric | |
| CN111826763B (en) | Yarn or fabric with effect of graying and preparation method and application thereof | |
| CN106883459A (en) | A kind of textile material of ventilation wear-resistance and preparation method thereof | |
| CN100999848A (en) | Veloutine fabric using wool and modified dacron miced spinning and tech. ethereof | |
| CN110129901A (en) | A kind of preparation method of creeping chill fiber | |
| CN112501707A (en) | Method for preparing wound dressing by montmorillonite intercalation polyacrylonitrile wet spinning | |
| EP4031697A1 (en) | Lyocell fibers and methods of producing the same | |
| CN111560167A (en) | Preparation method of anti-ultraviolet polyamide color master batch and functional fiber | |
| WO2013097265A1 (en) | Production method for zero-discharge yarn-dyed and woven fabric | |
| CN1609299A (en) | Linen blend yarn and producing method thereof | |
| CN109881333A (en) | A kind of family's textile fabric and preparation process using polylactic acid processing | |
| CN104831390A (en) | Luminous high-strength low-elongation viscose and production method thereof | |
| CN109056099B (en) | Production process of super-soft high-elasticity colored silk fiber |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210316 |
|
| WD01 | Invention patent application deemed withdrawn after publication |