氯化钠相转变 K-型卡拉胶/聚 N-异丙基丙烯酰胺共混凝胶的辐射合成及性质研究  

RADIATION SYNTHESIS AND PROPERTIES OF KAPPA-CARRAGEENAN- POLY(N-ISOPROPYLACRYLAMIDE) HYDROGEL BLENDS

作　　者：张艳群[1] 哈鸿飞[1] 

机构地区：[1]北京大学技术物理系,北京100871

出　　处：《高分子学报》2001年第4期485-488,共4页Acta Polymerica Sinica

基　　金：中国核工业科学基金资助 (基金号Y7197FY0 0 6)

摘　　要：用γ辐射技术合成了K 型卡拉胶 (KC)与聚N 异丙基丙烯酰胺共混凝胶 (Blendgels) .合成产物透明 ,有弹性和较好的力学强度 .对不同条件下共混凝胶性能的测定结果表明 ,所形成的共混凝胶有明显的氯化钠相转变性质 ,也保持了聚N 异丙基丙烯酰胺 (PNIPAM)特有的温度敏感性 (LCST为 34℃ )A hydrogel blend composed of kappa-carrageenan(KC) and poly(N-isopropylacrylamide)(PNIPAM) was prepared by gamma -irradiation. The blend gel prepared by this method was transparent, elastic and exhibited better mechanical strengh. The measurement of gel properties showed that the hydrogel blend had the sodium chloride-induced phase transition behavior. The release kinetics curves of Cl- in swelling system and the relationship between the Cl- induced phase transition concentration and swelling temperature proved the conclusion. Meanwhile, the typical thermosensitive feature of PNIPAM was also preserved.

关 键 词：K-型卡拉胶(KC) 聚N-异丙基丙烯酰胺 共混凝胶 温度敏感 辐射合成 氯化钠相转变 

分 类 号：O648[理学—物理化学]