摘要
用过氧化二苯甲酰作为引发剂,合成了几种N-乙烯基吡咯烷酮(NVP)/甲基丙烯酸β-羟乙酯(HEMA)/甲基丙烯酸酯(RMA)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和比较。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。不同的RMA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。
Hydrogel was synthesized by copolymerization of NVP, HEMA and RMA, with BPO as an initiator. It is found that the water in polymer has three states: free water, freezing bond water and non-freezing bond water. The different states of water in swelling hydrogels were studied with differential scanning calorimetry (DSC) and thermogravimetry (TG). DSC and TG data show that the content of non-freezing water in hydrogels increases with the increasing of RMA content.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2005年第2期253-256,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金(29976007)
广东省教育厅自然科学基金(Z02030)资助项目
