| 含疏水链节的聚N-异丙基丙烯酰胺共聚物的温敏性 |
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| 引用本文： | 毛华华,关银燕,齐再前,苏志强,石淑先,陈晓农.含疏水链节的聚N-异丙基丙烯酰胺共聚物的温敏性[J].功能高分子学报,2008,21(4):432-436. |
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| 作者姓名： | 毛华华 关银燕 齐再前 苏志强 石淑先 陈晓农 |
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| 作者单位： | 1. 北京化工大学材料科学与工程学院生物材料系,北京,100029
2. 北京化工大学材料科学与工程学院生物材料系,北京,100029;北京市新型高分子材料制备与加工重点实验室,北京,100029 |
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| 摘 要： | 采用溶液聚合法合成了一系列N-异丙基丙烯酰胺(NIPAM)与甲基丙烯酸甲酯、丙烯酸乙酯、丙烯酸丁酯或甲基丙烯酸丁酯的无规共聚物,用浊度观测法和光散射法测定了不同共聚物水溶液的温敏相转变行为.结果表明:所得共聚物的低临界溶解温度(LCST)均低于均聚物PNIPAM的,酯类单体的结构和含量对共聚物的LCST有显著影响,其中酯基上的烷基对共聚物LCST的影响能力大于丙烯酸酯α位上的烷基,前者对增大共聚物的疏水性有更大贡献.通过NIPAM与特定丙烯酸酯单体进行无规共聚可以合成转变温度低于PNIPAM均聚物且具有预设LCST数值的水溶性温敏聚合物.
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| 关 键 词： | N-异丙基丙烯酰胺 丙烯酸酯 温敏性共聚物 低临界溶解温度 |
Thermo-Sensitivity of N-Isopropylacrylamide Copolymers Containing Hydrophobic Units |
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| MAO Hua-hua,GUAN Yin-yan,QI Zai-qian,SU Zhi-qiang,SHI Shu-xian,CHEN Xiao-nong.Thermo-Sensitivity of N-Isopropylacrylamide Copolymers Containing Hydrophobic Units[J].Journal of Functional Polymers,2008,21(4):432-436. |
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| Authors: | MAO Hua-hua GUAN Yin-yan QI Zai-qian SU Zhi-qiang SHI Shu-xian CHEN Xiao-nong |
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| Institution: | MAO Hua-hua1,GUAN Yin-yan1,QI Zai-qian1,SU Zhi-qiang1,2,SHI Shu-xian1,CHEN Xiao-nong1,2(1.Department of Biomaterials,College of Materials Science , Engineering,Beijing University of Chemical Technology,Beijing 100029,China,2.Beijing Novel Polymer Material Preparation , Processing Key Laboratory,China) |
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| Abstract: | Random copolymers of N-isopropylacrylamide(NIPAM) with four types of acrylate,namely,methyl methacrylate(MMA),ethyl acrylate(EA),butyl acrylate(BA) and butyl methacrylate(BMA),were prepared respectively through solution free radical polymerization.Thermo-sensitivity of aqueous solutions of the copolymers obtained was investigated by turbidity fest and dynamic light scattering measurement.It is found that the structure and content of acrylic comonomer strongly affect the LCST of the copolymers,i.e.,the large... |
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| Keywords: | N-isopropylacrylamide acrylate thermo-sensitive copolymer LCST |
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