A review is given for some aspects of research work in thermosensitive hydrogel

including the study on mechanism of phase change

the preparation of thermosensitive hydrogel and its practical application in many fields such as chemistry

biotechnology and medicine. However

mechanical strength of the hydrogel is weak. To improve its mechanical strength

copolymerization and the interpenetrating polymer network have been tried. A new thermosensitve material

with higher mechanical strength and more sensitive to temperature

has been prepared by preirradiation grafting.