Application of polyurethane urea hydrogel with shape memory function

The invention relates to an application of a polyurethane urea hydrogel with a shape memory function. The polyurethane urea hydrogel is a copolymer of polyethylene glycol, diisocyanate and diamine. The polyurethane urea hydrogel provided by the invention has a temperature response shape memory function and a water response shape memory function at room temperature, and is capable of realizing deformation generation, fixation and restoration under the conditions of room temperature and water medium by means of good tensile properties of the prepared hydrogel and crystalline phase transformation of PEG (Polyethylene Glycol) in the process of dehydration crystallization and water-absorption decrystallization. The polyurethane hydrogel also has the characteristics of large elongation rate and high tensile strength and has application prospects in biomedical hydrogels, tissue engineering, hydrogel bracket materials and biomedical devices endowed with the shape memory function.