由α-环糊精或2-溴异丁酰溴改性的α-环糊精与溴丙酰溴封端的F127自组装形成的聚准轮烷(PPRs)为大分子引发剂,通过原子转移自由基聚合(ATRP),以聚乙二醇二丙烯酸酯(PEGDA)为桥键单元,2-甲基丙烯酸羟乙酯(HEMA)为调节剂制备了交联网络可调的热敏性超分子结构水凝胶.红外光谱(FT-IR)、核磁共振(1H-NMR)和X射线衍射(WAXD)对改性和包合物进行了表征.引入α-环糊精降低了凝胶溶胀度,而改性α-环糊精体系可以提高溶胀度.随PEGDA含量的增加,凝胶溶胀度提高,但随HEMA含量增加而降低.在20℃～50℃范围内,引入聚甲基丙烯酸羟乙酯链降低了凝胶的温度响应性,而由改性α-环糊精线穿的PPRs制备的水凝胶显示最好的热敏性和良好的力学强度.水凝胶的热敏性机理是由于共聚物中PPO链段的聚集形成.
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