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Application of graphene in preparing soybean protein fiber and fabric

A soybean protein fiber, soybean protein technology, applied in the direction of fiber chemical characteristics, single-component protein rayon, rayon manufacturing, etc., can solve the problem that soybean protein fiber has poor moisture resistance, soybean protein is not resistant to high temperature, and has not been widely promoted, etc. problems, to achieve the effect of increasing added value, excellent bulkiness, and excellent electrical conductivity

Active Publication Date: 2018-07-31
上海亮丰领先科技开发有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, soybean protein fiber has poor moisture resistance, and as the temperature rises, the fiber shrinkage rate will increase and the elongation at break will increase, so soybean protein is not resistant to high temperature
Based on some shortcomings such as soybean fiber, the fiber has not been widely promoted at present

Method used

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Examples

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Effect test

preparation example Construction

[0035] Correspondingly, the present invention also provides a kind of preparation method of modified soybean protein fiber, comprising the following steps:

[0036] After oxidizing graphene with a sheet structure of less than 10 layers with an oxidant, it is dispersed in an organic solvent to form a graphene oxide mixture;

[0037] In the presence of hydroiodic acid, the graphene oxide mixed solution is mixed with the soybean protein spinning solution, and the modified soybean protein fiber is obtained by wet spinning.

[0038] The invention mainly studies the spinning technology of graphene in soybean protein fiber, and successfully prepares soybean protein fiber containing graphene, which has a good application prospect.

[0039] In the embodiment of the present invention, liquid graphene derivatives are first prepared: graphene→graphene oxide (GO)→polar solvent dispersion to obtain a graphene oxide mixture, namely liquid graphene oxide (referred to as liquid graphene).

[00...

Embodiment 1

[0071] (1) Liquid graphene derivatives: select graphene powder within 10 layers, purity>99%, layer thickness 0.7-1.2nm, metal content<10ppm, adjust pH=4 to oxidize with 1% owf potassium permanganate Monolayer graphene oxide is prepared, dispersed in 95% ethanol solvent, and adjusted according to the mass ratio of 1:1 to obtain graphene oxide mixed liquid (also called liquid graphene).

[0072] (2) Soybean protein fiber (containing graphene): 1% owf liquid graphene, 10% soy protein, 0.5% owf hydroiodic acid, 1% owf alginate, 0.8% owf sodium caseinate, 1.5% owf fruit The glue is mixed with the remaining amount of polyvinyl alcohol, degreased, separated, dried, adjusted to pH = 10, and wet-spun at a spinning speed of 25 m / min to obtain fibers.

[0073] Using conventional standard methods in this field, the obtained fibers were tested for strength, electrical conductivity and other indicators. The results show that the fineness of the obtained fiber is 1.2dtex, the length is 18mm...

Embodiment 2

[0082] (1) Liquid graphene derivatives: select graphene powder within 10 layers, purity>99%, layer thickness 0.7-1.2nm, metal content<10ppm, adjust pH=5 to oxidize with 3% owf potassium permanganate Monolayer graphene oxide is prepared, dispersed in 95% ethanol solvent, and adjusted according to the mass ratio of 1:1 to obtain liquid graphene.

[0083] (2) Soybean protein fiber (including graphene): 2% owf liquid graphene, 15% soy protein, 0.5% owf hydroiodic acid, 1.5% owf alginate, 0.8% owf sodium caseinate, 1% owf fruit The glue is mixed with the remaining amount of polyvinyl alcohol, degreased, separated, dried, adjusted to pH = 10, and wet-spun at a spinning speed of 55m / min to obtain fibers, and the ethanol polar solvent is recovered.

[0084] The resulting fiber fineness: 1.1dtex, length 29mm, specific gravity 1.03g / m 3 , fiber moisture regain 6%, breaking strength (dry): 4.1 (cN / dtex), breaking strength (wet): 2.9 (cN / dtex), breaking elongation (dry): 14%, breaking el...

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Abstract

The invention provides application of graphene in preparing soybean protein fiber and a fabric, and in particular relates to modified soybean protein fiber and a preparation method thereof, the methodis as follows: oxidizing graphene having less than 10 layers; dispersing in an organic solvent to form a graphene oxide mixture; and mixing the graphene oxide mixture with a soybean protein spinningsolution in the presence of hydriodic acid to obtain the modified soybean protein fiber by wet spinning. The excellent electrical conductivity and high temperature resistance of the graphene make up for the deficiency of high-temperature brittleness of the soybean fiber, and the obtained fiber has better high temperature resistance. The excellent bulkiness and flexibility of the soybean fiber canneutralize the rigidity of the graphene, so that the modified soybean protein fiber is more tough and well-spinnable, and the cost is reduced. The modified soybean protein fiber is prepared by composite blending of the graphene and soybean protein, the advantages of the graphene and the soybean protein are combined, and deficiencies of the graphene and the soybean protein are compensated, so thatthe function is more powerful, the cost is controllable, and the added value of textiles is improved.

Description

technical field [0001] The invention relates to the technical field of soybean protein fibers, in particular to the application of graphene in the preparation of soybean protein fibers and fabrics thereof, in particular to a modified soybean protein fiber, its preparation method and application. Background technique [0002] Soybean protein fiber is called the "ecological textile fiber" of the new century, and its main raw material comes from soybean meal. Generally speaking, soybean protein fiber is made of soybean protein isolate and polyvinyl alcohol polymer copolymer blending and spinning, and is rich in amino acids. The fiber has fine monofilament fineness, small specific gravity, good acid and alkali resistance, has a cashmere-like feel, silk-like soft luster, and also has the warmth retention property of wool and the moisture absorption and moisture conductivity of cotton fiber. [0003] However, soybean protein fiber has poor moisture resistance, and with the increa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F4/00D01F1/10D01D5/06
CPCD01D5/06D01F1/10D01F4/00
Inventor 王耀民
Owner 上海亮丰领先科技开发有限公司
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