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Preparation method and use method of silk protein environment stimulation response actuator

A technology that responds to environmental stimuli and silk protein, which is applied in animal fibers, textiles, papermaking, and fiber processing, to achieve green processes, good results, and protection of crystal structures

Active Publication Date: 2020-03-17
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such organization in stimuli-responsive materials will provide greater opportunities for material designability and complex responses. Another challenge is to develop systems that can respond to multiple stimuli in an intelligent way, long-term stability and durability. remains a major challenge for such a system

Method used

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  • Preparation method and use method of silk protein environment stimulation response actuator
  • Preparation method and use method of silk protein environment stimulation response actuator
  • Preparation method and use method of silk protein environment stimulation response actuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The mulberry silk fibroin fiber is dispersed in the deep eutectic solvent of urea-choline chloride, wherein the molar ratio of urea and choline chloride is 5:1, and the mass ratio of silk fibroin fiber and deep eutectic solvent is 1:20; then the silk fibroin fibers are stripped into fibrils by heating and stirring, the temperature of the silk fibroin fibers treated with the deep eutectic solvent is 80°C, and the treatment time is 3h; the prepared deep eutectic solvent- The fibril dispersion system is put into a dialysis bag and dialyzed in distilled water, and then the dialysate is concentrated in polyvinyl alcohol. The molecular weight cut-off of the dialysis bag for dialysis deep eutectic solvent is 10000, and the used for concentrating the fibril dialysate The molecular weight of polyvinyl alcohol is 8000, and the concentration of the fibril after concentration is 1wt%; the fibril concentrate in step (2) is evaporated and self-assembled, and the thickness of the conce...

Embodiment 2

[0029]The mulberry silk fibroin fiber is dispersed in the urea-choline chloride deep eutectic depth solvent, wherein the mol ratio of urea and choline chloride is 10:1, and the mass ratio of the silk fibroin fiber and the deep eutectic depth solvent is 1:40; then the silk fibroin fibers are stripped into fibrils by heating and stirring, the temperature of the silk fibroin fibers treated with the deep eutectic solvent is 100°C, and the treatment time is 24h; the prepared deep eutectic solvent- The fibril dispersion system is put into a dialysis bag and dialyzed in distilled water, and then the dialysate is concentrated in polyvinyl alcohol. The molecular weight cut-off of the dialysis bag for dialysis deep eutectic solvent is 14000, and the used for concentrating the fibril dialysate The molecular weight of polyvinyl alcohol is 10000, and the concentration of the fibrils after concentration is 2wt%; the fibril concentrate in step (2) is evaporated and self-assembled, and the thi...

Embodiment 3

[0032] Disperse tussah silk fibroin fibers in thiourea-choline chloride deep eutectic solvent, wherein the molar ratio of thiourea to choline chloride is 8:1, and the mass ratio of silk fibroin fiber to deep eutectic solvent The temperature is 1:30; then the silk fibroin fibers are stripped into fibrils by heating and stirring, the temperature of the deep eutectic solvent treatment silk fibroin fibers is 90 ° C, and the treatment time is 6h; the prepared deep eutectic solvent -Put the fibril dispersion system into a dialysis bag and dialyze in distilled water, and then put the dialysate into polyvinyl alcohol for concentration. The dialysis bag for dialysis deep eutectic solvent has a molecular weight cut-off of 14000, which is used to concentrate the fibril dialysate The molecular weight of the polyvinyl alcohol is 10000, and the concentration of the fibrils after concentration is 1.5wt%; the fibril concentrate in step (2) is evaporated and self-assembled, and the thickness of...

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Abstract

The invention discloses a preparation method and a use method of a silk protein environment stimulation response actuator. Silk is treated in a low eutectic depth solvent to prepare filaments with micrometer scales and nano-scales, preparation conditions are controlled to generate new surface micro-topographies and structural change of the filaments, the filaments are further self-assembled into afilm device, and environments such as temperature and humidity and difference of gas in the environments on two sides of the device are controlled to achieve movement behaviors such as folding, bending and supporting by the aid of selective adsorption and permeation performance of the filaments. The actuator has a wide application prospect in the field of environmental response, artificial intelligence and the like.

Description

technical field [0001] The invention relates to a preparation method and a use method of a silk protein environmental stimulus response actuation device. The prepared material has excellent moisture sensitivity, strength and the like and can be used in the fields of nano-robots, sensors and the like. Background technique [0002] Silk protein is a natural high-molecular protein produced by silkworms. Silk protein is composed of silk fibroin and sericin. Usually silk accounts for 74% and sericin accounts for about 24%. Silk fibroin has good biocompatibility comparable to collagen; good cell adhesion, and has the function of maintaining the normal shape of cells without affecting cell activity; non-sensitizing, non-toxic and stimulating to the body ; Partially biodegradable, and its degradation products themselves have no toxic side effects on tissues. Silk fiber is one of the strongest elastomeric natural biomaterials, possessing ultra-strong, extensible and tough properties...

Claims

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Application Information

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IPC IPC(8): D06M13/432D06M13/463D06M15/333D06M101/10
CPCD06M13/432D06M13/463D06M15/333D06M2101/10
Inventor 付飞亚张梦怡张宇鹏刘向东
Owner ZHEJIANG SCI-TECH UNIV
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