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Preparation method of fibroin blending regenerated cellulose fiber

A technology of regenerated cellulose and silk protein, applied in the direction of cellulose/protein conjugated artificial filament, artificial filament made of viscose, etc., can solve the problems of silk protein waste, increase production cost, decrease in strength, etc., and achieve Promote infiltration, penetration and dispersion, accelerate dispersion and dissolution, and reduce surface tension

Active Publication Date: 2013-01-02
湖州珠力纳米材料科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This firstly causes the waste of expensive silk protein and increases the production cost; secondly, it leads to the low content of silk protein in the fiber, making it difficult to exert the excellent performance of silk protein
Therefore, the existing silk protein modified fiber production methods are not conducive to industrialized production.
Moreover, in the prior art, the strength of the protein-modified fiber is lower than that of the ordinary fiber. With the increase of the protein content in the modified fiber, the strength drops more, and the textile processing performance of the modified fiber becomes worse, which limits the improvement to a certain extent. The application of sexual fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The silk scraps are degummed, swollen, dried and pulverized to obtain silk protein powder with a particle size of 0.2 microns.

[0026] After the silk protein powder is dispersed using 2wt% sodium hydroxide solution, a dispersant and a crosslinking agent fatty acid alkyl alcohol amide are added. 0.3wt% and 1.5wt% of the silk protein dispersion mother liquor.

[0027] Blend the silk protein dispersion mother liquor with cellulose viscose to obtain a blended viscose, the blending ratio is 20wt% of the fibroin relative to the cellulose in the cellulose viscose, and the blended viscose is filtered, removed Soaking and aging processes, spinning in a coagulation bath containing sulfuric acid, sodium sulfate and zinc sulfate, and then post-processing steps to obtain silk protein blended regenerated cellulose fibers with a silk protein content of 19.5wt%.

Embodiment 2

[0029] Soak the silk scraps with 0.3wt% sodium hydroxide at room temperature for 1.5 hours, then wash with water until the pH value is 7.5, fully swell with 15% sodium hydroxide solution and adjust the pH value to 8, dry and grind by ultrasonic jet A silk protein powder with a particle size of 0.15 microns is obtained.

[0030] After the silk protein powder was dispersed using 1.5wt% sodium hydroxide solution, a dispersant fatty alcohol polyether and a crosslinking agent fatty acid alkyl alcohol amide were added, and the addition amounts of the dispersant and crosslinking agent were respectively relative 0.2wt% and 0.5wt% of methylcellulose in the viscose to obtain the silk protein dispersion mother liquor.

[0031] Using cellulose pulp as raw material, the viscose is prepared through the steps including dipping, pressing, crushing, aging, yellowing and dissolving, and the dissolved cellulose viscose is blended with the silk protein dispersion mother liquor to obtain the blend...

Embodiment 3

[0033] Soak silk scraps with 0.5wt% sodium bicarbonate solution at room temperature for 1 hour, then wash with water until neutral, swell with 20% sodium bicarbonate solution and adjust the pH value to 10, dry and ultrasonically pulverize to obtain granules Silk protein powder with a diameter of 0.4 microns.

[0034] After the silk protein powder is dispersed using 4wt% sodium hydroxide solution, a dispersant fatty alcohol polyether and a cross-linking agent fatty acid alkyl alcohol amide are added, and the addition amounts of the dispersant and cross-linking agent are respectively 0.4wt% and 2.0wt% of methylcellulose in the glue to obtain the silk protein dispersion mother liquor.

[0035]Using cellulose pulp as raw material, the viscose is prepared through the steps including dipping, pressing, crushing, aging, yellowing and dissolving, and the dissolved cellulose viscose is blended with the silk protein dispersion mother liquor to obtain the blended viscose. The mixing rat...

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Abstract

The invention discloses a preparation method of fibroin blending regenerated cellulose fiber, comprising the steps of (1) degumming, swelling, drying and smashing the silk offcuts to obtain a fibroin powder with grain size of 0.1-0.5 micrometers; (2) dispersing the fibroin powder with sodium hydroxide solution, adding the dispersing agent and the cross-linking agent aliphatic acid alkylolamides to obtain the fibroin dispersion mother solution; and (3) blending the fibroin dispersion mother solution with the cellulose adhesive to obtain the blended adhesive, and carrying out spinning molding and post processing to obtain the fibroin blending regenerated cellulose fiber. According to the preparation method provided by the invention, the loss amount of the protein in the preparation process is low, the content of protein in the produced fibroin blending regenerated cellulose fiber is high, the production cost is low, the strength of the fibroin blending regenerated cellulose fiber is high; and the preparation method is easy for industrial production, improves the textile processing performance of the fibroin blending regenerated cellulose fiber and broadens the application range of the fibroin blending regenerated cellulose fiber.

Description

technical field [0001] The invention relates to the technical field of modified cellulose fibers, in particular to a preparation method of silk protein blended regenerated cellulose fibers. Background technique [0002] Silk protein, also known as silk fibroin, is a natural polymer fibrous protein extracted from silk, which accounts for about 70% to 80% of silk and contains 18 kinds of amino acids, of which glycine, alanine and serine account for about 80% of the total composition. %above. Silk fibroin itself has good mechanical properties and physical and chemical properties, such as good flexibility and tensile strength, breathability and moisture permeability, slow release and so on. [0003] The research and development of the blending of silk protein and cellulose to prepare regenerated fibers currently mainly has two technical methods, the representative one is the inventor's 200910153053.6 silk protein blended regenerated cellulose fiber and its preparation process, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/08D01F8/02
Inventor 孙力
Owner 湖州珠力纳米材料科技开发有限公司
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