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Method for preparing protein modified cellulose fibre

A cellulose fiber and protein technology, applied in the direction of cellulose/protein conjugated rayon, wet spinning, etc., can solve the problems of undisclosed fiber processing and molding process, improve mechanical properties and production efficiency, reduce production Cost, effect of improving fiber performance

Inactive Publication Date: 2008-01-30
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Among the existing data on the mixing and dissolving of protein and cellulose using ionic liquid as a solvent, the dissolving method is mainly reported, and the specific fiber processing and molding process has not been disclosed.

Method used

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  • Method for preparing protein modified cellulose fibre
  • Method for preparing protein modified cellulose fibre
  • Method for preparing protein modified cellulose fibre

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Raw materials: silk protein, protein content 97%; wood pulp, cellulose content 95%, polymerization degree 300; ionic liquid, 1-allyl-3-methylimidazolium chloride.

[0041] Mix dry silk protein with a mass percentage of 1% and dry wood pulp with a mass percentage of 99%, add 1-allyl-3-methylimidazolium chloride, dissolve at 70°C for 2 hours, and obtain a stable Uniform spinning solution, the mass percentage of 1-allyl-3-methylimidazolium chloride in the solution is 95%, the spinning solution is filtered and defoamed at 70°C, extruded through a metering pump and a spinneret, and passed through 1cm of wet air layer, the temperature is 5°C, the humidity is 95%, enter the coagulation bath of 5°C, the coagulation bath is water, and enter the hot water bath of 80°C through the guide roller for stretching, and after washing with normal pressure steam, at 110 Dry in the hot air of ℃, take up filament with the speed of 20m / min, obtain the protein-modified cellulose fiber that mon...

Embodiment 2

[0043]Raw materials: wool protein, protein content 94%; cotton pulp, fiber content 99%, polymerization degree 600; ionic liquid, 1-butyl-3-methylimidazolium chloride.

[0044] Mix 2% wool protein with 98% cotton pulp, add 1-butyl-3-methylimidazolium chloride, swell at 30°C for 2 hours, dehydrate, dissolve at 80°C for 1.5 hours, To obtain a stable and uniform spinning solution, the mass percentage of 1-butyl-3-methylimidazolium chloride in the solution is 92%, filter and defoam at 80°C, extrude through a metering pump and a spinneret, and pass through a 2cm wet The air layer, the temperature is 15°C, the humidity is 80%, enters the coagulation bath of 20°C, the mass percentage of 1-butyl-3-methylimidazolium chloride in the coagulation bath is 5%, enters the hot water of 80°C through the guide roller Bath, stretched at a speed of 30m / min, washed with water under normal pressure and dried with hot air at 120°C, cut into short filaments with a length of 56mm, and obtained protein-...

Embodiment 3

[0046] Raw materials: soybean protein, protein content 92%; bamboo pulp, fiber content 99%, polymerization degree 500; ionic liquid, 1-butyl-3-methylimidazole formate.

[0047] Mix 1% dry soybean protein with 99% 1-butyl-3-methylimidazole formate and dissolve at 60°C for 2 hours to obtain solution ①; mix 15% Mix dry bamboo pulp with 85% 1-butyl-3-methylimidazole formate, dissolve at 80°C for 1 hour to obtain solution ②, then mix equal amounts of solution ①②, and stir at 80°C After 0.5 hours to obtain a stable and uniform spinning solution, filter and defoam at 80°C, extrude through a metering pump and a spinneret, pass through a 3cm layer of humid air at a temperature of 15°C and a humidity of 75%, and enter a coagulation bath at 20°C. The mass percentage of 1-butyl-3-methylimidazole formate in the coagulation bath is 8%, enters the hot water drawing bath of 90 ℃ through the guide roller, washes with water vapor under normal pressure, and dries in the hot air of 140 ℃, The fi...

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Abstract

The invention relates to a preparation method of a protein modified cellulose fiber, comprising the steps that: (1) a protein and a cellulose are dissolved in ion solution to prepare homogeneous mixing spinning solution; (2) the spinning solution is deaerated, filtered, measured, and extruded out through spinning jet to form spinning rills, and the spinning rills pass through a wet air layer and enter into a solidification bath to be solidified and molded; (3) the yarn is extended, cleaned by water, dried and heat molded, and formed into fiber to prepare the protein modified cellulose fiber. The method has the advantages of environmental protective, low cost, fast spinning speed and high production efficiency, and the prepared fiber has the advantages of comfort and health care, etc.

Description

technical field [0001] The invention belongs to a method for preparing cellulose fibers, in particular to a method for preparing protein-modified cellulose fibers. Background technique [0002] Synthetic fiber has experienced rapid development for half a century, and its current production capacity has basically stabilized. At the same time, with the reality of shortage of oil resources and increasing pressure on environmental protection, the comprehensive utilization of natural resources has received more and more attention. [0003] Both cellulose and protein are important natural raw materials for textile processing, such as cotton, hemp, wool, silk, etc., but it is still difficult to meet the growing needs of consumers in terms of output and performance. Many cellulose and protein end products are still produced using regeneration or derivatization methods. Due to the strong interaction of the polar groups of natural polymers, it is difficult to dissolve them directly i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/02D01D5/06
Inventor 张玉梅王华平谢桂军程凌燕
Owner DONGHUA UNIV
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