以丙烯酰胺(AM)和二甲基二烯丙基氯化铵(DMDAAC)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,采用水溶液聚合法制备了AM/DMDAAC水凝胶.考察了样品水凝胶的离子强度敏感性和pH敏感性,以及在外加直流电场刺激下的消溶胀动力学.结果表明,样品水凝胶具有灵敏的离子强度敏感性,在NaCl质量分数为0.3％左右发生体积相变;对pH变化不敏感,具有很好的酸碱耐受性;DMDAAC单体含量对水凝胶的电敏感性能有显著影响.%Acrylatnide/dimethyldiallylammonium chloride (AM/DMDAAC) hydrogels were prepared by free radical copolymerization in aqueous solution in the presence of N,N meth-ylene bis (acrylamide) (MBAAm) as crosslink agent, ammonium per sulfate and sodium bisulfite as redox initiator. Ionic strengths sensitive, pH sensitive and deswelling kinetics of the sample hydrogels in different electric stimulus were illustrated. It was found that ion in tensity of solution had a favorable impact on the sample hydrogels. Hydrogels display an obvious variety on volume at mass point of NaCl of 0. 3%. It was not sensitive on variety pH degrees. It was shown that monomer amount of DM DAAC had a favorable impact on electric sensitive properties of the AM/DMDAAC hydrogels.
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