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。

英文摘要：

Effect of polyampholyte structure on the interactions between negatively charged poly（2-（dimethylamino）ethyl methacrylate）-b-poly（acrylic acid）（PDMA_m-b-PAA_n） and cationic gemini surfactant hexylene-1,6-bis（dodecyldimethylammonium） dibromide（C_（12）H_（25）（CH_3）_2N（CH_2）_6N（CH_3）_2C_（12）H_（25）·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） PDMA_m-b-PAA_n 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.