High-strength conductive hydrogel based on polyethyleneglycol diacrylate crosslinking and preparation method thereof

Abstract

The invention discloses a high-strength conductive hydrogel based on polyethyleneglycol diacrylate crosslinking and a preparation method thereof. According to the invention, 2-vinyl-4,6-diamino-1,3,5-triazine is taken as a monomer, polyethyleneglycol diacrylate is taken as a cross-linking agent, poly(3,4-ethylenedioxy group thiophene)-poly (styrene sulfoacid) is taken as a blending component, a free radical polymerization is carried out on a monomer initiated through an initiator and carbon-carbon double bonds on the cross-linking agent to form a hydrogel network having physical crosslinking and chemical crosslinking, and the poly(3,4-ethylenedioxy group thiophene)-poly (styrene sulfoacid) is doped in a gel network structure. The hydrogel has the advantages of simple process, strong stretching and compression performance, good conductivity, and good biocompatibility.

Description

technical field [0001] The invention belongs to the direction of hydrogel in the field of biotechnology, more specifically, relates to a kind of 2-vinyl-4,6-diamino-1,3,5-triazine, polyethylene glycol diacrylate and High-strength conductive hydrogel prepared by poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonic acid) and its preparation method. Background technique [0002] Conductive hydrogel is a functional material formed by combining conductive polymer and hydrogel. It not only has the soft and wet characteristics of hydrogel, but also has conductive function. Therefore, conductive hydrogels have wide applications in fields such as supercapacitors, lithium batteries, and biosensors. However, conductive hydrogels tend to exhibit weak and brittle properties, resulting in poor mechanical properties. In addition, conductive hydrogel involves the combination of hydrogel and conductive polymer, so its preparation process is often complicated. Therefore, the above-mention...

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Problems solved by technology

Although composite conductive hydrogels and double-network conductive hydrogels can enhance the mechanical properties of conductive hydrogels to a certain extent, the preparation methods of these two conductive hydrogels are cumbersome (Qu B, Li J, Xiao et al. H, etal. Facile preparation and characterization of sodium alginate / graphiteconductive composite hydrogel[J]. Polymer Composites, 2015.)

In addition, for double-network conductive hydrogels, because most of the conductive polymers are insoluble in solvents, it is difficult to process and handle, and it also causes the problem of uneven distribution of conductive components in the gel matrix (Kishi et al. R, Kubota K, Miura T, et al.Mechanically tough double-network hydrogels with high electronic conductivity[J].Journal of Materials Chemistry C,2014,2(4):736-743.)

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