A high-strength, flexible, light-transmitting and implantable silk protein/bacterial cellulose/graphene composite conductive film

Abstract

The invention provides a high-strength flexible light-transmitting implantable silk protein / bacterial cellulose / graphene composite conducting film. The high-strength flexible light-transmitting implantable silk protein / bacterial cellulose / graphene composite conducting film comprises micro-nano coconut-fruit bacterial cellulose, silk protein, graphene and an electrode. A preparation method comprises the detailed steps of breaking the coconut-fruit bacterial cellulose to form the micro-nano bacterial cellulose solution, uniformly mixing with a silk-protein water solution to form a composite solution, then dripping a graphene water solution, carrying out vacuum filtering to remove a solvent, and thus obtaining a concentrated composite solution; and then putting an Ti / Au electrode, the concentrated composite solution and a polycarbonate film onto a PE (Polyethylene) substrate, adopting a laminating method to naturally dry to be cured, and removing the PE substrate and the polycarbonate film to obtain the high-strength flexible light-transmitting implantable silk protein / bacterial cellulose / graphene composite conducting film. The high-strength flexible light-transmitting implantable silk protein / bacterial cellulose / graphene composite conducting film provided by the invention has the advantages that the preparation method is simple, the mixing of the materials is uniform; and the prepared thin film is high in strength and good in flexibility, transparency and biocompatibility, also has conducting property, and can meet the requirement of the implantable medical materials.

Description

technical field [0001] The invention belongs to the technical field of textile materials, and in particular relates to a high-strength, flexible, light-transmitting and implantable silk protein / bacterial cellulose / graphene composite conductive film. Background technique [0002] Silk protein is a natural polymer fibrous protein extracted from silk, composed of 18 kinds of α-amino acids, with biocompatibility, degradability, non-toxicity, brittleness to a certain extent and aerobic permeability in wet state , Silk protein can be used alone as a raw material or combined with other raw materials to form artificial fibers, films, non-woven fabrics, porous scaffolds, hydrogels, micro-nano particles and other materials. Bacterial cellulose is a porous network nano-scale biopolymer polymer synthesized by microbial fermentation. It is formed by linear linking of D-glucopyranose with β-1-4 glycosidic bonds. Compared with plant cellulose, bacterial fiber has Ultra-fine nano-scale net...

AI Technical Summary

Problems solved by technology

From the above-mentioned prior art, it can be seen that the research on the composite materials prepared by using bacterial cellulose and silk protein as raw materials is rare at present, because bacterial cellulose has the problems of low yield and high production cost, and the bacterial cellulose The addition method is mostly combined with the silk protein material in the form of hydrogel or film, which increases the difficulty of mixing and crosslinking bacterial cellulose and silk protein, and affects the overall performance of the composite material.

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