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Preparation method and slurry of modified feather protein slurry

A technology of feather protein and feather protein powder, which is applied in the direction of textiles and papermaking, fiber treatment, plant fiber, etc., can solve the problems of water solubility of feather protein and adverse effects of graft polymerization reaction, so as to improve water solubility, improve use performance, Ease of use

Inactive Publication Date: 2016-06-01
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that the presence of disulfide bonds will adversely affect the water solubility and graft polymerization of feather proteins

Method used

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  • Preparation method and slurry of modified feather protein slurry
  • Preparation method and slurry of modified feather protein slurry
  • Preparation method and slurry of modified feather protein slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The natural feather protein that dry weight is 100g is dispersed in 1150g distilled water, is mixed with the feather protein suspension that mass concentration is 8%, then moves in the 2000mL three-neck flask that mechanical stirring, thermometer and dropping funnel are housed, stirs, After the temperature rises and the suspension reaches 70°C, the reducing agent——NaHSO is added dropwise within 15 minutes. 3 aqueous solution, where NaHSO 3 The dosage is 25% of the feather protein quality, and the mass percentage of feather protein in the whole suspension is 6%. Keep stirring and reducing at 70°C for 4h, filter, wash with distilled water for 2-3 times, and then use a cold dryer to dry to obtain the reduced Feather protein after agent treatment;

[0026] Weigh 50 g of the feather protein prepared by the above reaction and add it into 200 g of distilled water to form a feather protein suspension with a mass concentration of 20%, adjust the pH value of the reaction medium ...

Embodiment 2

[0036] Using the method and steps of Example 1, only changing the type of grafted monomer, changing the monomer to acrylamide, the feather protein-acrylamide graft copolymer slurry measured by visual inspection and spectrophotometry is at pH=6.5 See attached table 3 for water solubility.

[0037] The water solubility of table 3 feather protein-acrylamide graft copolymer slurry

[0038]

[0039] Remarks: The mass percentage of feather protein in the dispersion / solution in Table 3 is 1%.

[0040] The adhesion performance of feather protein-acrylamide graft copolymer slurry to cotton fiber is shown in attached table 4 respectively.

[0041] Table 4 Feather protein-acrylamide graft copolymer size to the adhesion performance of cotton fiber

[0042]

[0043] Note: The linear density of pure cotton roving in Table 4 is 479tex.

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Abstract

The invention belongs to the technical filed of modified feather protein slurry for pasting usage of weaving warp yarn, and discloses a preparation method of the modified feather protein slurry and the grafting modified feather protein slurry with good water solubility under neutral condition prepared by the preparation method. According to the invention, an appropriate reducing agent is selected for pretreating the feather protein raw material, which can break disulfide bond in cystine of the feather protein molecules as possible. subsequently, under the initiation effect of a suitable redox system, a hydrophilic monomer (such as acrylic acid or acrylamide)with certain amount is grafted to a feather protein molecular chain, and then the water-soluble grafting feather protein products can be prepared under the neutral condition. The prepared slurry has good water solubility under neutral or weak acidic condition (pH is between 6.5 and 7.0), can obviously improve the usage performance of the slurry, and can protect the natural fiber yarn such as wool and silk from being damaged by an alkali agent.

Description

technical field [0001] The invention belongs to the technical field of modified protein sizing used in textile warp yarn sizing, and in particular relates to a preparation method of modified feather protein sizing and the method for preparing grafted modified feather protein sizing with good water solubility under neutral conditions . Background technique [0002] Warp sizing is a crucial process in the weaving production process. Chinese textile manufacturers often call it "Tiger's Mouth". Foreign textile academics have also commented: "One minute of sizing, one shift of cloth machine". Textile size is a necessary material in the production process of warp yarn sizing. The annual consumption in my country is about 300,000 tons, ranking second in the consumption of textile raw materials, second only to fiber materials. Slurry is usually composed of adhesives and auxiliary agents. Adhesives are a type of adhesive substance and are the main material for preparing slurry. Aft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F289/00C08H1/06D06M15/263D06M15/285D06M101/06
Inventor 金恩琪李曼丽
Owner SHAOXING UNIVERSITY