Preparation method of response-temperature-adjustable temperature sensitive hydrogel

Abstract

The invention relates to a preparation method of a response-temperature-adjustable temperature sensitive hydrogel. The method comprises a step that a hydrogel prepolymerization liquid is polymerized at 0-50DEG C for 1-48h, and the hydrogel prepolymerization liquid comprises a copolymerization monomer, a cross-linking agent, an initiator, a catalyst and deionized water. The method has the advantages of simplicity, low cost, large raw material selection range; and the prepared temperature sensitive hydrogel has the advantages of uniform three-dimensional net structure, excellent mechanical properties, and realization of accurate regulation of the response temperature in a range of 25-90DEG C, and can be widely applied in the intellectual material field.

Description

technical field

[0001] The invention belongs to the field of thermosensitive hydrogel preparation, in particular to a preparation method of thermosensitive hydrogel with adjustable response temperature. Background technique

[0002] Hydrogel is a soft wet material with a three-dimensional network crosslinked structure composed of hydrophilic polymers and solvent water. After absorbing a large amount of water, it can cause macroscopic changes in the polymer network. Hydrogels have the properties of a solid that cannot flow macroscopically, and have a solution-like behavior microscopically, which can swell in water but not dissolve. According to the response of polymer hydrogels to external environmental stimuli, hydrogels can be divided into traditional hydrogels and smart hydrogels. Traditional hydrogels have no response characteristics to external environmental stimuli, only have swelling behavior, and their volume does not change with the external environment. Smart hydr...

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