Preparation method and application of shape memory hydrogel

A technology of hydrogel and cross-linked hydrogel, which is applied in the direction of manufacturing tools, program-controlled manipulators, manipulators, etc., to achieve the effects of fast deformation speed, high energy density, ultra-high elongation at break and toughness
CN112940288AActive Publication Date: 2021-06-11WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WUHAN UNIV
Publication Date
2021-06-11

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Abstract

A preparation method of shape memory hydrogel comprises the following steps: step 1, dissolving acrylamide, acrylic acid and acrylamide adamantane in a cyclodextrin-grafted sea squirt cellulose nanocrystal aqueous dispersion according to a certain proportion, incubating at the temperature of 55 DEG C for 2 hours, cooling in an ice-water bath, adding an initiator ammonium persulfate, injecting the dispersion liquid into a mold, and polymerizing at the temperature of 55 DEG C for 5 hours, so as to obtain the mono-crosslinked hydrogel; step 2, carrying out a series of continuous orientation operations on the mono-crosslinked hydrogel obtained in the step 1 to obtain spiral hydrogel; and step 3, soaking the spiral hydrogel obtained in the step 2 in a stationary liquid for 24 hours to obtain the shape memory hydrogel. The invention further discloses an application of the shape memory hydrogel. The prepared hydrogel is applied to a micro-engine and artificial muscle of an automobile model.
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Claims

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