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中文摘要: 采用Zeta电位、荧光探针、表面张力和黏度等方法研究了碱性条件下不同嵌段比的两性聚电解质聚(N,N-二甲胺基甲基丙烯酸乙酯-b-丙烯酸)(PDMAm-b-PAAn)与阳离子偶联表面活性剂（C12H25(CH3)2N(CH2)6N(CH3)2C12H25·2Br-) (简称12-6-12)的相互作用。结果表明：由于静电相互作用，两嵌段聚电解质PDMAm-b-PAAn和12-6-12之间可形成类胶束或复合物，PDMA链段的弱亲水性对复合物起到稳定的作用。对同一类型的两嵌段聚电解质，改变两链段的相对长度之比，既不会使其在溶液中的构象发生改变，也不会使其与表面活性剂的相互作用模式发生改变。
Abstract:Effect of polyampholyte structure on the interactions between negatively charged poly(2-(dimethylamino)ethyl methacrylate)-b-poly(acrylic acid) (PDMAm-b-PAAn) and cationic gemini surfactant hexylene 1,6-bis(dodecyldimethylammonium) dibromide (C12H25(CH3)2N(CH2)6N(CH3)2C12H25·2Br-) (abbreviation for 12-6-12) was studied by zeta potential measurement, fluorescence spectroscopy, surface tension and viscosity measurement. It was shown that micelle like aggregates or complexes could form between PDMAm-b-PAAn and 12-6-12 due to the electrostatic interaction and they were stabilized by the weakly hydrophilic PDMA segment. Diblock polyelectrolytes with different lengths of PDMA and PAA segment had the same conformation in the solution and the same interaction mode with gemini surfactant.
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基金项目:国家自然科学基金项目(20806022，20706013);教育部博士点基金项目(200802510008)
引用本文：
熊智瑛,梁艳艳,康红梅,韩霞,彭昌军.两性聚电解质PDMAm-b-PAAn与表面活性剂（12-6-12）的相互作用[J].功能高分子学报,2011,24(1):.
XIONG Zhi-ying,LIANG Yan-yan,KANG Hong-mei,HAN Xia,PENG Chang-jun.Effect of Polyampholyte Structure on the Interactions between PDMAm-b-PAAn and Gemini Surfactant (12-6-12)[J].Journal of Functional Polymers,2011,24(1):.
熊智瑛,梁艳艳,康红梅,韩霞,彭昌军.两性聚电解质PDMAm-b-PAAn与表面活性剂（12-6-12）的相互作用[J].功能高分子学报,2011,24(1):.
XIONG Zhi-ying,LIANG Yan-yan,KANG Hong-mei,HAN Xia,PENG Chang-jun.Effect of Polyampholyte Structure on the Interactions between PDMAm-b-PAAn and Gemini Surfactant (12-6-12)[J].Journal of Functional Polymers,2011,24(1):.
