ZHUANG Yinfeng, YANG Hua, WANG Guowei, et al. Radiation polymerization and controlled drug release of P(NIPA−co−HEMA) and PNIPA/P(HEMA) IPN hydrogels[J]. Journal of Radiation Research and Radiation Processing, 2004,22(5):266-270.
ZHUANG Yinfeng, YANG Hua, WANG Guowei, et al. Radiation polymerization and controlled drug release of P(NIPA−co−HEMA) and PNIPA/P(HEMA) IPN hydrogels[J]. Journal of Radiation Research and Radiation Processing, 2004,22(5):266-270.DOI:
Hydrogels of poly N−isopropylacrylamide (PNIPA), poly (N−isopropylacrylamide−co−2−hydroxyethyl methacrylate) (P (NIPA−co−HEMA)) and PNIPA/P(HEMA) IPN (Interpenetrating Polymer Network) were prepared by radiation polymerization. Dependence of their swelling behavior on temperature was studied. Effects of absorbed dose and dose rate on polymerization, feed monomer concentration and ratio, and polymerization medium on phase transition temperature, swelling ratio, and swelling and deswelling kinetics of these hydrogels were disscused. Papain (PAP) was provided a model drug. An investigation of controlled drug release of the hydrogels was conducted. According to the experimental results, the hydrogels with optimum performances were produced at absorbed dose rate of 1kGy/h, total dose of 30—40kGy, 10% total monomer concentration, and in polymerization medium of n−butyl alcohol. These copolymer and IPN hydrogels were promising materials for developing controlled drug release system.
关键词
辐射聚合N−异丙基丙烯酰胺甲基丙烯酸2−羟基乙酯水凝胶药物释放体系
Keywords
Radiation PolymerizationN−Isopropylacrylamide2−Hydroxyethyl MethacrylateHydrogelsDrug Release System