电场敏感的智能性水凝胶  

The Electric-Field-Sensitive Hydrogels

作　　者：尚婧[1] 陈新[1] 邵正中[1] 

机构地区：[1]复旦大学高分子科学系聚合物分子工程教育部重点实验室,上海200433

出　　处：《化学进展》2007年第9期1393-1399,共7页Progress in Chemistry

基　　金：国家自然科学基金项目(No.20674011)资助

摘　　要：电场敏感水凝胶是一类在电刺激下可以溶胀、收缩或弯曲的智能性水凝胶,其主要特点是可以将电能转化为机械能。本文对近年来已见报道的电场敏感水凝胶的研究进行了较为详细的综述。同时,对电场敏感水凝胶的响应机理、影响水凝胶响应性的因素以及其在能量转换装置、人工肌肉等方面的应用作了相应的介绍。Electric-field-sensitive hydrogel is a kind of intelligent hydrogels that exhibits swelling, shrinking or bending behavior on the application of an electric field. The main advantage of such kind of hydrogel is that it can transform electric energy into mechanical energy. In this paper, the recent research on electric-field-sensitive hydrogels is reviewed, in which the preparation and deformation mechanism of hydrogels are introduced. It is generally thought that the deformation of the hydrogel in an electric field is due to the change of osmotic pressure based on the voltage-induced motion of ions in the electrolyte solution and may be influenced by a number of factors, including pH, ionic strength of the bath solution, as well as the electric potential imposed across the hydrogels. At last, the applications of such an electric-field-sensitive hydrogel, for example, in the fields of energy transducing devices, artificial muscles, and controlled drug delivery system are also presented.

关 键 词：环境敏感 聚电解质 渗透压 离子 弯曲 

分 类 号：O631.2[理学—高分子化学] TB381[理学—化学]