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A kind of silk fibril cracking agent and its preparation and use method

A silk fiber and silk technology, applied in the field of micro-nano materials, can solve the problems of inability to completely break the fibrils, achieve the effects of improving cracking and separation efficiency, simple operation, and mild solvent action

Active Publication Date: 2021-10-26
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, only the immersion treatment in the solution composed of small molecular compound / deionized water / alcohol cannot completely break the interaction between fibrils.

Method used

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  • A kind of silk fibril cracking agent and its preparation and use method
  • A kind of silk fibril cracking agent and its preparation and use method
  • A kind of silk fibril cracking agent and its preparation and use method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0031] A silk fibril cracking agent and a method for preparing and using the same, the method comprising the steps of:

[0032] S1 preparation solution:

[0033] S11 configures a ternary mixed solution composed of calcium nitrate, ethanol and deionized water. The concentration and ratio of calcium nitrate / ethanol / deionized water are: the concentration of calcium nitrate is 7mol / L, and the ratio of deionized water to alcohol is 1:5;

[0034] S12 configures a solution composed of Tris and EDTA, the ratio is: 10mM Tris and 2mM EDTA;

[0035] S2 cracking treatment: immerse the degummed silkworm silk in the ternary solution composed of calcium nitrate / ethanol / deionized water prepared in S11, soak it at 45°C for 3 days, and wash it fully; use the silk fiber treated in the first step Soak in Tris-EDTA solution for 2 hours;

[0036] S3 post-treatment: the fibers obtained in the above step S2 are fully washed and dried to obtain silk with weakened fibril force.

Embodiment 2

[0038] A silk fibril cracking agent and a method for preparing and using the same, the method comprising the steps of:

[0039] S1 preparation solution:

[0040] S11 configures a ternary mixed solution composed of calcium nitrate, ethanol and deionized water. The concentration and ratio of calcium nitrate / ethanol / deionized water are: the concentration of calcium nitrate is 5mol / L, and the ratio of deionized water to alcohol is 1:3;

[0041] S12 configures a solution composed of Tris and EDTA, the ratio is: 50mM Tris and 10mM EDTA;

[0042] S2 cracking treatment: immerse the degummed tussah silk in the ternary solution composed of calcium nitrate / ethanol / deionized water prepared in S11, soak it at 60°C for 5 days, and wash it fully; use the silk fiber after the first step treatment Soak in Tris-EDTA solution for 0.5h;

[0043] S3 post-treatment: the fibers obtained in the above step S2 are fully washed and dried to obtain silk with weakened fibril force.

Embodiment 3

[0045] A silk fibril cracking agent and a method for preparing and using the same, the method comprising the steps of:

[0046] S1 preparation solution:

[0047] S11 configures a ternary mixed solution composed of calcium nitrate, ethanol and deionized water. The concentration and ratio of calcium nitrate / ethanol / deionized water are: the concentration of calcium nitrate is 4mol / L, and the ratio of deionized water to alcohol is 1:1;

[0048] S12 configures a solution composed of Tris and EDTA, the ratio is: 1mM Tris and 1mM EDTA;

[0049]S2 cracking treatment: immerse the degummed tussah silk in the ternary solution composed of calcium nitrate / ethanol / deionized water prepared in S11, soak for 7 days at 30°C, and wash fully; the silk fiber after the first step is treated with Soak in Tris-EDTA solution for 4h;

[0050] S3 post-treatment: fully wash and dry the fibers treated in the above step S2 to obtain silk with weakened fibril force.

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Abstract

The invention discloses a silk fibril cracking agent and its preparation and use methods. The silk fibril cracking agent is composed of two parts, Reagent No. 1 and Reagent No. 2, wherein Reagent No. 1 is a soluble calcium salt / alcohol / water ternary mixed solution, and Reagent No. 2 is Tris-EDTA solution. The degummed silk fibroin fibers are soaked in No. 1 reagent at 30-60 °C for 1 to 7 days, and then soaked in No. 2 reagent for 0.5 to 4 hours to obtain silk fibroin fibers with significantly weakened inter-fibril forces. . The silk fibril cracking agent provided by the invention can significantly improve the cracking and separation efficiency of the fibrils, and reduce the energy consumption and time required for the separation of silk micro-nano fibrils.

Description

technical field [0001] The invention relates to the technical field of micro-nano materials, in particular to a silk fibril cracking agent and a preparation and use method thereof. Background technique [0002] Silk fiber is a natural protein fiber material, and its silk fiber has a remarkable micro-nano hierarchical structure of fibril assembly. Silk fibroin macromolecules assemble to form fibrils with a diameter of tens of nanometers, and these fibrils will further assemble to form fibril structures with a scale of hundreds of nanometers or even microns. The connection between silk fibroin macromolecular chains, fibrils and fibrils is mainly hydrogen bond. [0003] Micro-nano fiber materials have been widely used in functional materials and devices. If natural silk fibers can be efficiently decomposed into micro-nano-scale fibers, the added value of silk resources will be greatly enhanced. [0004] Silk micro-nano fibrils can be obtained in various ways. At present, mic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/155D06M11/65D06M13/342D06M101/10
CPCD06M11/155D06M11/65D06M13/342D06M2101/10
Inventor 尤仁传张强李秀芳闫书芹尤海宁
Owner WUHAN TEXTILE UNIV
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