用过氧化二苯甲酰(BPO)作为引发剂,合成了N-乙烯基吡咯烷酮(NVP)/甲基丙烯酸β-羟乙酯(HEMA)和NVP/HEMA/甲基丙烯酸甲酯(MMA)共聚物水凝胶,用差热扫描量热法(DSC)和热重法(TG)对这些亲水凝胶中吸附水的状态进行了研究.结果表明,水凝胶中水的状态大致可分为自由水、可冻结的结合水和非冻结的结合水.不同用量的MMA与NVP和HEMA共聚,溶胀度不同,其吸附水中不同状态水的含量也有所差异,结果表明,随着MMA含量的增加,水凝胶中非冻结结合水的含量也增加.
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