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中文摘要：
以异丙基丙烯酰胺（NIPAAm）、2-丙烯酰胺基-2-甲基丙磺酸（AMPS）和甲基丙烯酸N，N-二甲氨基乙酯（DMAEMA）为单体，N，N’-亚甲基双丙烯酰胺为交联剂，过硫酸铵和亚硫酸氢钠为氧化还原引发剂，采用自由基聚合法制备了一系列电场敏感性水凝胶，研究了水凝胶在不同含量NaCl溶液、不同电压、不同电极间距的最大偏转氖度和可逆偏转行为。结果表明，在非接触电场下，当NaCl溶液质量分数为0．1％时该系列水凝胶均向负极弯曲，而当NaCl溶液质量分数为0．2％以上时均弯向正极。随着电压的增大和电极间距的减小，水凝胶的最大偏转角也增大；AMPS单体越多，最大偏转角越大；该水凝胶在电刺激下具有良好的可逆性，使其能够用于开发智能材料。
英文摘要：
A series of electric field sensitive hydrogels are prepared by free-radical polymerization with N-iso- propylacrylamide（ PNIPAAm）, 2-acrylamido-2-met hylpropane sulfonic acid （AMPS） and N- （ 2- （dimethylamino） ethyl） - methacrylamide（DMAEMA） as monomers, N,N＇-methylene bisaerylamide as crosslinking agent, ammounium persulfate and sodium bisulfite as redox initiator. The maximum deflection angle of the hydrogels under various kinds of concentrations of the NaCl solutions, voltages and distance between electrodes as well as reversible bending deflection are studied in detail. It is found that under noneontact electric field, the hydrogels show a bending towards the cathode when the concentration of the NaCl solutions is 0. 1 %, but a bending towards anode when the concentration of the NaCl solutions is above 0. 2%. As the voltages increases and distance between electrodes decreases, which led to the maximum deflection angle of the hydrogels increases. The prepared hydrogels has favorable reversibilities which can be used to develop intelligent materials.
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