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A kind of preparation method of size on wool keratin and sericin yarn

A technology of wool keratin and sericin, which is applied in the field of sizing, can solve the problems of sericin sewage and environmental pollution, and achieve the effects of reusing waste, reducing production costs, and high sizing rate

Active Publication Date: 2021-06-18
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that sericin protein is discharged along with production wastewater during silkworm cocoon processing, resulting in sericin protein sewage, waste wool causing environmental pollution, and providing a wool keratin and sericin protein yarn that realizes waste recycling Preparation method of online slurry

Method used

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  • A kind of preparation method of size on wool keratin and sericin yarn
  • A kind of preparation method of size on wool keratin and sericin yarn
  • A kind of preparation method of size on wool keratin and sericin yarn

Examples

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Effect test

Embodiment 1

[0016] A preparation method for wool keratin and sericin yarn, comprising the following steps:

[0017] 1) Preparation of sericin solution: Ungummed silkworms were taken for degumming. In order to obtain hydrolyzate with narrow molecular weight range and high molecular weight, borax-potassium carbonate buffer system (pH11.2-11.5, 0.5mol / L ) to degumming silk, the temperature was controlled at 95°C, and the degumming time was 2 hours. The molecular weight of the prepared sericin was determined to be 1568 Da, and the extraction rate of sericin was 26.8%. Removal of non-metallic anions that will cause precipitation: Because the sericin extracted by sodium carbonate contains carbonate ions, it will precipitate with metal ions in the water system at high temperature to form insoluble salts. Therefore, add hydrochloric acid reagent (2mol / L) to the extracted sericin, adjust the pH value of the solution to 1.5, and heat at 90°C for 20 minutes to remove carbonate ions in the solution. ...

Embodiment 2

[0023] A preparation method for a preparation method of wool keratin and sericin yarn, comprising the following steps:

[0024] 1) Preparation of sericin solution: Take undegummed tussah silk for degumming, in order to obtain a hydrolyzate with a narrow molecular weight range and a large molecular weight, use a borax-potassium carbonate buffer system: pH11.2-11.5, concentration 0.5 mol / L, to carry out silk degumming, the temperature is controlled at 100 ℃, degumming 1-3 hours, the sericin protein prepared by this method has a molecular weight of 1280Da, and the sericin protein extraction rate is 30.3%. Removal of non-metallic anions that will cause precipitation: Because the sericin extracted by sodium carbonate contains carbonate ions, it will precipitate with metal ions in the water system at high temperature to form insoluble salts. Therefore, add 2mol / L hydrochloric acid reagent to the extracted sericin, adjust the pH value of the solution to 1.0, and heat at 90°C for 30 m...

Embodiment 3

[0030] A preparation method for wool keratin and sericin yarn, comprising the following steps:

[0031] 1) Preparation of sericin solution: take undegummed silkworm for degumming, in order to obtain hydrolyzate with narrower molecular weight range and larger molecular weight, use borax-potassium carbonate buffer system: pH11.2-11.5, concentration 0.5mol / L, to carry out silk degumming, the temperature is controlled between 90 and the degumming time is 2.5 hours. The molecular weight of sericin prepared by this method is determined to be 1445Da, and the extraction rate of sericin is 27.2%. Removal of non-metallic anions that will cause precipitation: Because the sericin extracted by sodium carbonate contains carbonate ions, it will precipitate with metal ions in the water system at high temperature to form insoluble salts. Therefore, add hydrochloric acid reagent (2mol / L) to the extracted sericin, adjust the pH value of the solution to 2.5, and heat at 90°C for 25 minutes to re...

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Abstract

The invention discloses a method for preparing wool keratin and sericin yarn size. The technical problem to be solved is that silkworm cocoon processing sericin sewage and waste wool cause environmental pollution. The invention includes the following steps: 1) : preparation of sericin solution; 2) preparation of keratin solution; 3) preparation of mixed protein solution: the concentration of sericin in the sericin solution prepared in step 1) and step 2) and the keratin in the keratin solution Adjust the concentration of keratin to the same concentration, mix the keratin solution and sericin solution according to the mass ratio of 4:1‑1:4; 4) add auxiliary reagents: get the prepared wool keratin and sericin yarn Size solution; 5) The prepared wool keratin and sericin yarn size is used for yarn size. At the same time, the invention can realize waste recycling and effectively reduce the pollution of sericin sewage and waste wool to the environment.

Description

technical field [0001] The invention relates to a sizing method, in particular to a method for preparing biodegradable wool keratin and sericin yarn sizing, rather than the traditional method of making textile sizing by using starch and PVA. Background technique [0002] The main component of silk is composed of silk fibroin and sericin, among which silk fibroin accounts for about 70% of the total silk, and sericin accounts for about 30% of the total silk. In actual production, silk fibroin is used in silkworm cocoon processing, and most sericin is discharged with production wastewater during the degumming process, because it is difficult to be biodegraded, which will cause serious pollution to the environment and also cause protein resources. waste. [0003] Waste wool keratin is an available biological resource, and millions of tons of waste wool keratin are discarded every year, causing serious environmental pollution. As a high-quality high-molecular protein resource, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/15D06M15/13D06M15/647D06M13/156C07K14/435C07K14/47C07K1/14D06M101/32D06M101/06
CPCC07K14/43586C07K14/4741D06M13/156D06M15/13D06M15/15D06M15/647D06M2101/06D06M2101/32D06M2200/35
Inventor 苏小舟栗蕾陈劲松
Owner ZHONGYUAN ENGINEERING COLLEGE
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