Preparation method and use method of silk protein environmental stimulus-responsive actuating device

A technology that responds to environmental stimuli and silk fibroin is applied to animal fibers, textiles, papermaking, and fiber processing to achieve excellent fatigue resistance, good filter resistance, and good results.

Active Publication Date: 2022-07-15
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 environmental stimulus-responsive actuating device
  • Preparation method and use method of silk protein environmental stimulus-responsive actuating device
  • Preparation method and use method of silk protein environmental stimulus-responsive actuating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The mulberry silk fibroin fibers are dispersed in a urea-choline chloride deep eutectic solvent, wherein the molar ratio of urea and choline chloride is 5:1, and the mass ratio of the silk fibroin fibers to the deep eutectic solvent is 1:20; then the silk fibroin fibers are peeled off into fibrils by heating and stirring, and the temperature of the deep eutectic solvent to treat the silk fibroin fibers 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 put into polyvinyl alcohol for concentration. The molecular weight of polyvinyl alcohol is 8000, and the concentration of fibrils after concentration is 1wt%; the fibril concentrate in step (2) is evaporated and self-assembled, and the thickness of the concentrate liquid film when the fibril concentrate is self-assembled is 5mm , the ambient humidity is 40%; finally, the actuator devi...

Embodiment 2

[0029]The mulberry silk fibroin fibers are dispersed in a urea-choline chloride deep eutectic solvent, wherein the molar ratio of urea to choline chloride is 10:1, and the mass ratio of the silk fibroin fibers to the deep eutectic solvent is 1:40; then the silk fibroin fibers are peeled off into fibrils by heating and stirring, and the temperature of the deep eutectic solvent to treat the silk fibroin fibers 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 put into polyvinyl alcohol for concentration. The molecular weight of the 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 thickness of the concentrate liquid film when the fibril concentrate is self-assembled is 8mm , the ambient humidity is 50%; finally, the act...

Embodiment 3

[0032] The tussah silk fibroin fibers are dispersed in a thiourea-choline chloride deep eutectic solvent, wherein the molar ratio of thiourea and choline chloride is 8:1, and the mass ratio of the silk fibroin fibers to the deep eutectic solvent is 1:30; then the silk fibroin fibers are peeled off into fibrils by heating and stirring, and the temperature of the deep eutectic solvent to treat the silk fibroin fibers is 90 ° C and the treatment time is 6h; the prepared deep eutectic solvent is - The fibril dispersion system is put into a dialysis bag and dialyzed in distilled water, and then the dialysate is put into polyvinyl alcohol for concentration. The molecular weight cut-off of the dialysis bag for dialysis of the eutectic depth solvent is 14,000, 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 s...

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Abstract

The invention discloses a preparation method and a use method of a silk protein environmental stimulus-responsive actuating device. The invention prepares fibrils with micrometer and nanometer scales by treating the silk in a deep eutectic solvent, and controls the preparation conditions to make the fibrils produce new surface microscopic morphology and structural changes; and then the fibrils are self-assembled into Membrane devices utilize the selective adsorption and permeation properties of fibrils to achieve folding, bending, supporting and other motion behaviors by controlling the differences in the environment on both sides of the device, such as temperature, humidity, and gas in the environment. The invention has broad application prospects in the fields 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-responsive actuating device. The prepared material has excellent moisture sensitivity, strength and the like, and can be used in the fields of nanorobots, sensors and the like. Background technique [0002] Silk protein is a natural macromolecular protein produced by the silkworm. Silk protein is composed of two proteins, silk fibroin and sericin. Usually, silk fibroin 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 normal cell morphology without affecting cell activity; non-sensitizing, non-toxic and irritating to the body ; Partially biodegradable, and its degradation products themselves have no toxic side effects to tissues. And silk fiber is one of the strongest elastomeric natural biomaterials, with super strong, expandabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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