Hydrogel with wet-state adhesion property as well as preparation method and application thereof

Abstract

The invention discloses hydrogel with wet-state adhesion property as well as a preparation method and application thereof. The hydrogel with the wet-state adhesion property is prepared from the following raw materials in parts by mass: 100 parts of acrylic acid, 10 parts to 30 parts of quaternized xylan, 3 parts to 6 parts of tannic acid, 0.1 part to 1 part of a cross-linking agent, 0.1 part to 1 part of an initiator, and 150 parts to 400 parts of water. The hydrogel disclosed by the invention has excellent mechanical property and underwater adhesion property, and is environment-friendly, the preparation method is simple, and industrial large-scale production is easy to realize.

Description

technical field [0001] The invention relates to the technical field of hydrogel materials, in particular to a hydrogel with wet-state adhesion performance and a preparation method and application thereof. Background technique [0002] Hydrogel is a material with a three-dimensional network structure produced by hydrophilic polymers through physical or chemical reactions. It also has certain fluidity while maintaining mechanical properties, and has a structure similar to that of natural extracellular matrix. structure, so it has excellent application prospects in the fields of wearable biosensors, bioadhesives, medical dressings, etc. However, hydrogel is easy to absorb water, and a water film will be formed between the hydrogel and the substrate, which will greatly reduce the adhesion of the hydrogel to the substrate, especially in wet conditions and water environments. Among them, conventional hydrogels tend to lose their adhesive properties completely, which limits the ap...

AI Technical Summary

Problems solved by technology

However, hydrogel is easy to absorb water, and a water film will be formed between the hydrogel and the substrate, which will greatly reduce the adhesion of the hydrogel to the substrate, especially in wet conditions and water environments. However, traditional hydrogels tend to lose their adhesive properties completely, which limits the application of hydrogels to a large extent.

[0003] In recent years, researchers have done a lot of research on the wet adhesion of hydrogels, and developed some hydrogels that can be used in wet environments, but these hydrogels still have obvious defects or deficiencies. It is mainly manifested in the following aspects: 1) The adhesion of hydrogel is still weak in a wet environment, and the adhesion strength is not enough; 2) It has certain toxicity, which is not safe and environmentally friendly; 3) Hydrogel is easy to appear Significant swelling, eventually deformed

Images