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A kind of preparation method of prolamin-modified polylactic acid regenerated yarn fiber yarn

A prolamin and regenerated fiber technology, applied in fiber treatment, cellulose/protein conjugated artificial filament, yarn, etc., can solve the problems of affecting material usability, protein inactivation, reducing fiber mechanical properties, etc., to achieve good The effect of biocompatibility and degradability, stable protein activity, and low price

Active Publication Date: 2017-03-22
GUANGZHOU XILONG GARMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method adopts simple mixing of raw materials and combined with melt spinning technology. High temperature spinning will deactivate some proteins, promote the degradation of polylactic acid, reduce the mechanical properties of fibers, and affect the usability of materials.

Method used

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  • A kind of preparation method of prolamin-modified polylactic acid regenerated yarn fiber yarn
  • A kind of preparation method of prolamin-modified polylactic acid regenerated yarn fiber yarn
  • A kind of preparation method of prolamin-modified polylactic acid regenerated yarn fiber yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Extract gliadin from corn, soybean and wheat, and use directional enzyme digestion technology to obtain small molecule polypeptide gliadin with a molecular weight of 1000-4500Da, and dissolve 40 parts of small molecule polypeptide gliadin in parts by mass Add 50 parts of water or alcohol solvent, add 10 parts of benzoic acid or sorbic acid stabilizer, and stir at 100° C. for 45 minutes to obtain prolamin hydrolysis solution.

[0030] (2) Add prolamin hydrolysis solution into polylactic acid at a volume ratio of 1:1, and mix evenly to obtain a spinning stock solution with a viscosity of 50 mPas and a pH of 5.5.

[0031] (3) The spinning stock solution is subjected to conventional wet spinning at 115°C, and the obtained filaments are coagulated, washed, dried, stretched, and heat-treated to obtain prolamin-modified polylactic acid regenerated fibers, and then 32 After the polylactic acid regenerated fiber is twisted and threaded, a prolamin-modified polylactic acid re...

Embodiment 2

[0033] (1) Extract gliadin from corn, soybean and wheat, and use directional enzyme digestion technology to obtain small molecule polypeptide gliadin with a molecular weight of 1000-4500Da, and dissolve 40 parts of small molecule polypeptide gliadin in parts by mass Add 50 parts of water or alcohol solvent, add 10 parts of benzoic acid or sorbic acid stabilizer, and stir at 100° C. for 50 minutes to obtain prolamin hydrolysis solution.

[0034] (2) Add prolamin hydrolysis solution into polylactic acid at a volume ratio of 1:2, and mix evenly to obtain a spinning stock solution with a viscosity of 100 mPas and a pH value of 8.

[0035] (3) The spinning dope is subjected to conventional wet spinning at 115°C, and the obtained filaments are coagulated, washed, dried, stretched, and heat-treated to obtain prolamin-modified polylactic acid regenerated fibers, and then 56 After the polylactic acid regenerated fiber is twisted and threaded, a prolamin-modified polylactic acid regener...

Embodiment 3

[0037] (1) Extract gliadin from corn, soybean and wheat, and use directional enzyme digestion technology to obtain small molecule polypeptide gliadin with a molecular weight of 1000-4500Da, and dissolve 40 parts of small molecule polypeptide gliadin in parts by mass Add 50 parts of water or alcohol solvent, add 10 parts of benzoic acid or sorbic acid stabilizer, and stir at 100° C. for 45 minutes to obtain prolamin hydrolysis solution.

[0038] (2) According to the volume ratio of 1:1.5, add the prolamin hydrolysis solution to the polylactic acid, and mix evenly to obtain a spinning stock solution with a viscosity of 85 mPas and a pH value of 7.

[0039] (3) The spinning stock solution is subjected to conventional wet spinning at 115°C, and the obtained filaments are coagulated, washed, dried, stretched, and heat-treated to obtain prolamin-modified polylactic acid regenerated fibers, and then 46 After the polylactic acid regenerated fiber is twisted and threaded, a prolamin-mo...

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Abstract

A prolamine-modified polylactic acid regenerated fibre is provided. The prolamine-modified polylactic acid regenerated fibre is prepared by cutting extracted prolamine into micro-molecule polypeptide prolamin; dissolving the micro-molecule polypeptide prolamine into water or an alcohol solvent; adding a stabilizing agent; stirring uniformly at a high temperature to obtain a prolamine hydrolysis solution; adding the prolamine hydrolysis solution into polylactic acid; fully mixing to obtain a spinning stock solution; subjecting the spinning stock solution to wet spinning; and subjecting a filament to curing, water washing, drying, tension and heat treatment to obtain the prolamine-modified polylactic acid regenerated fibre. Then, a prolamine-modified polylactic acid regenerated fibre yarn is obtained by twisting and doubling. The cross section of the prolamine-modified polylactic acid regenerated fibre prepared by a method is an incomplete circle, the side is provided with micro holes, and the prolamine peptide and the polylactic acid are bonded with chemical bonds. 32-56 prolamine-modified polylactic acid regenerated fibres are twisted and prepared into the prolamine-modified polylactic acid regenerated fibre yarn.

Description

technical field [0001] The invention belongs to the technical field of textile materials, and in particular relates to a preparation method of prolamin-modified polylactic acid regenerated fiber yarn. Background technique [0002] With the rapid development of polymer technology and nanotechnology, chemical fibers have spread in all areas of people's lives. Chemical fibers are divided into regenerated fibers and synthetic fibers, among which regenerated fibers are made of natural polymers, which are natural, environmentally friendly, easy to wear, biodegradable, and in line with the concept of green ecology. On this basis, many functional regenerated fibers have emerged, such as cool, antibacterial, deodorant, negative ion and other functional regenerated fibers. [0003] The basic composition of protein is amino acid, and there are more than 20 kinds of amino acids related to the human body. Proper protein supplementation can effectively guarantee the normal needs of the h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F8/02D01D5/253D01D5/06D02G3/02
Inventor 刘玲
Owner GUANGZHOU XILONG GARMENT