中文摘要：

用紫外吸收光谱的方法研究了邻苯二甲酸氢钾芳香反离子与十六烷基三甲基溴化胺阳离子表面活性剂胶团之间的相互作用．发现了阳离子表面活性剂胶团的加入能使芳香反离子的吸收光谱特征峰发生红移．邻苯二甲酸氢钾芳香反离子与十六烷基三甲基溴化胺阳离子表面活性剂胶团混合液的紫外吸收光谱峰值λmax随pH的增大而减小．这被解释为在pH=1的酸性奈件下，邻苯二甲酸氢钾会以邻苯二甲酸形式存在，阳离子表面活性剂胶团与芳香环之间的相互作用主要是阳离子-П相互作用．在pH=13的碱性条件下，邻苯二甲酸氢钾会以邻苯二甲酸根的形式存在，邻苯二甲酸根与十六烷基三甲基溴化胺阳离子表面活性剂胶团之间的相互作用主要是静电引力作用．通过测定混合体系的表面张力发现芳香反离子与胶团混合体系的表面张力比各组分的表面张力低，其原因归结于邻苯二甲酸氢根与十六烷基三甲基溴化胺阳离子表面活性剂胶团之间存在静电引力和阳离子-П相互作用的综合结果．

英文摘要：

The interaction between CTAB and potassium hydrogen phthalate mixture aqueous solution were studied by UV spectrum. It is found that the absorption spectrum take place red shift when CTAB were placed in potassium hydrogen phthalate aqueous solution. The wavelength of UV absorption spectrum of CTAB and potassium hydrogen phthalate aqueous solution at different pH is different. The reason is phthalic acid was formed when pH = 1 and phthalate was formed when pH = 13 . The interaction between cation-П is produced when the molecular relative position between CTAB and potassium hydrogen phthalate was suitability. It is found that surface tension of CTAB and potassium hydrogen phthalate mixture system is lower than that of each component, it is caused by the interaction of both electrostatic attraction and cation-П between CTAB and potassium hydrogen phthalate mixture aqueous solution.