A kind of solid hydrogel and preparation method thereof

Abstract

The invention provides solid hydrogel and a preparation method thereof. The preparation method comprises the following steps: a) mixing a monomer, a photoinitiator, a crosslinking agent, a preservative, an anti-freezing agent and water and stirring uniformly to prepare aqueous solution; b) injecting the aqueous solution into a plastic bag body manufactured by high cycle heal seal; c) exhausting and sealing the plastic bag body with the aqueous solution; and d) placing the plastic bag body treated in the step c behind a lampstand and turning on a lamp to irradiate the lamp. According to the preparation method for the solid hydrogel provided by the invention, the photoinitiator is triggered through irradiation, and the monomer molecule is initiated and activated by irradiation to be radical to perform crosslinking polymerization, so the light penetrability is high, polymerization is uniform and the edge, the inner layer of colloid maintain consistent, residues of an oxidation-reduction system is avoided, the using amount of the crosslinking agent is reduced, and the polymer colloid is low in crosslinking and high in strength. In addition, polymerization is triggered through irradiation, so implosion is avoided and morphologic change in the polymerization process is avoided.

Description

technical field [0001] The invention relates to a solid hydrogel, in particular to a solid hydrogel and a preparation method thereof. Background technique [0002] Hydrogel is a kind of high molecular polymer with certain biocompatibility. It is a kind of high molecular network system, which is soft in nature and can maintain a certain shape. water. In the prior art, thermal polymerization is usually used to prepare hydrogel, which is easy to operate, but when thermal polymerization is used, the heat is usually obtained near the heat source, and the heat transfer is uneven, resulting in the edge and inner layer of the colloid. Polymerization is not uniform, and redox system residues will be produced when thermal polymerization is used. The amount of crosslinking agent used is large, and implosion will occur. There are morphological changes during the polymerization process. Forced pressure molding of the product is required to resist polymerization deformation. The product...

AI Technical Summary

Problems solved by technology

In the prior art, thermal polymerization is usually used to prepare hydrogel, which is easy to operate, but when thermal polymerization is used, the heat is usually obtained near the heat source, and the heat transfer is uneven, resulting in the edge and inner layer of the colloid. Polymerization is not uniform, and redox system residues will be produced when thermal polymerization is used. The amount of crosslinking agent used is large, and implosion will occur. There are morphological changes during the polymerization process. Forced pressure molding of the product is required to resist polymerization deformation. The production process is cumbersome