Method for preparing silk fibroin sodium alginate composite fiber

A technology of silk fibroin and sodium alginate, applied in cellulose/protein conjugated rayon, rayon manufacturing, chemical characteristics of fibers, etc., can solve the problems of poor mechanical properties of silk fibroin and sodium alginate composite fibers , to avoid the decline of mechanical properties, maintain mechanical properties, and improve permeability

Inactive Publication Date: 2018-06-22
常州凯奥机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: Aiming at the problem of poor mechanical properties of traditional silk fibroin sodium alginate composite fiber, a preparation method of silk fibroin sodium alginate composite fiber is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] After mixing carbomer and water at a mass ratio of 1:35, let it swell at room temperature for 24 hours, then heat and stir to dissolve at a temperature of 75°C and a rotation speed of 300r / min to obtain a carbomer solution; Mix silk fibroin and water at a mass ratio of 1:50 and pour it into a beaker, and move the beaker into a magnetic stirrer with digital display speed measurement and constant temperature, and stir and dissolve at a constant temperature for 2 hours at a temperature of 80°C and a speed of 500r / min. , pour the material in the beaker into a dialysis bag with a molecular weight cut-off of 12kDa, place the dialysis bag in deionized water, and perform dialysis for 6 days. During the dialysis, change the water every 5 hours. Centrifuge and separate for 10 minutes, collect the supernatant, and obtain the pretreated silk fibroin solution; mix the elastase and the pretreated silk fibroin solution at a mass ratio of 1:600 ​​and pour them into a three-necked flask,...

example 2

[0023] After mixing carbomer and water at a mass ratio of 1:35, let it swell at room temperature for 24 hours, then heat and stir to dissolve at a temperature of 75°C and a rotation speed of 300r / min to obtain a carbomer solution; Mix silk fibroin and water at a mass ratio of 1:50 and pour it into a beaker, and move the beaker into a magnetic stirrer with digital display speed measurement and constant temperature, and stir and dissolve at a constant temperature for 2 hours at a temperature of 80°C and a speed of 500r / min. , pour the material in the beaker into a dialysis bag with a molecular weight cut-off of 12kDa, place the dialysis bag in deionized water, and perform dialysis for 6 days. During the dialysis, change the water every 5 hours. Centrifuge and separate for 10 minutes, collect the supernatant, and obtain the pretreated silk fibroin protein solution; in parts by weight, take 10 parts of phospholipids, 8 parts of sodium alginate, 4 parts of monosaccharides, 4 parts o...

example 3

[0025] After mixing carbomer and water at a mass ratio of 1:35, let it swell at room temperature for 24 hours, then heat and stir to dissolve at a temperature of 75°C and a rotation speed of 300r / min to obtain a carbomer solution; Mix silk fibroin and water at a mass ratio of 1:50 and pour it into a beaker, and move the beaker into a magnetic stirrer with digital display speed measurement and constant temperature, and stir and dissolve at a constant temperature for 2 hours at a temperature of 80°C and a speed of 500r / min. , pour the material in the beaker into a dialysis bag with a molecular weight cut-off of 12kDa, place the dialysis bag in deionized water, and perform dialysis for 6 days. During the dialysis, change the water every 5 hours. Centrifuge and separate for 10 minutes, collect the supernatant, and obtain the pretreated silk fibroin solution; mix the elastase and the pretreated silk fibroin solution at a mass ratio of 1:600 ​​and pour them into a three-necked flask,...

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Abstract

The invention discloses a method for preparing a silk fibroin sodium alginate composite fiber and belongs to the technical field of natural macromolecule composite materials. The method comprises thefollowing steps: firstly, mixing, stirring and dissolving silk fibroin with water, performing dialysis, and performing centrifugal separation so as to obtain a pretreated silk fibroin solution; mixingelastinase and the pretreated silk fibroin solution, adjusting the pH value, and performing constant-temperature stirring enzymolysis so as to obtain enzymatic hydrolysate; mixing phospholipid with the enzymatic hydrolysate, performing ultrasonic dispersion, further adding sodium alginate, plant essential oil and monosaccharide, performing a constant-temperature stirring reaction so as to obtaina reaction liquid, mixing the reaction liquid with Carbomer, performing a constant-temperature stirring reaction so as to obtain a spinning solution, performing vacuum defoaming, spinning, washing with water, and performing traction, coiling and drying, thereby obtaining the silk fibroin sodium alginate composite fiber. The silk fibroin sodium alginate composite fiber prepared by using the methodhas good mechanical properties.

Description

technical field [0001] The invention discloses a preparation method of silk fibroin sodium alginate composite fiber, which belongs to the technical field of preparation of natural polymer composite materials. Background technique [0002] Sodium alginate (SA) is a polymer polysaccharide extracted from brown algae. Linear polymers, due to their good biocompatibility, natural degradability and high flame retardancy, have been widely used in the fields of biomedicine, food, sewage treatment and textiles. Sodium ions and divalent metal cations (Mg 2+ Except) a rapid ion exchange reaction occurs, the G units in the sodium alginate structure are more closely combined with the divalent metal cations, forming a special "eggshell structure", and finally the G units accumulate to form hydrogels, and the sodium alginate fibers are According to this principle, it is prepared by wet spinning method, but because the molecular chain segment of sodium alginate is rigid, its molecular chai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/02D01F8/18D01F1/10C12P21/06
CPCC07K14/43586C12P21/06D01F1/10D01F8/02D01F8/18
Inventor 赵玲萍许玉张淼
Owner 常州凯奥机电科技有限公司
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