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本文用测定表面张力的方法研究了非离子表面活性剂辛基甲基亚砜(OMS)分别与离子型表面活性剂C_(10)H_(21)SO_4N_a(SDeS)、C_7F_(15)COONa(SPFO),C_(10)H_(21)N(CH_3)_3B_r(DeTAB)等在水溶液中的相互作用。发现上述混合体系的胶团形成及表面吸附都有不同程度的增效作用;表面活性分子在吸附层中的相互作用参数β~s以及在胶团中的相互作用参数β~m均为负值并有一定变化规律;OMS与DeTAB的相互作用较OMS与SDeS或SPFO的相互作用弱得多;此现象自OMS分子在水溶液中的质子化作用得到解释。
In this paper, the effects of nonionic surfactants octyl methyl sulfoxide (OMS) and ionic surfactants C_ (10) H_ (21) SO_4N_a (SDeS), C_7F_ (15) COONa ), C_ (10) H_ (21) N (CH_3) _3B_r (DeTAB) and so on in aqueous solution. It was found that both the micelle formation and the surface adsorption of the mixed system have synergism to some extent. The interaction parameters β-s and β-m of the surface active molecules in the adsorption layer are all negative And there is a certain variation. The interaction between OMS and DeTAB is much weaker than the interaction between OMS and SDeS or SPFO. This phenomenon is explained by the protonation of OMS molecule in aqueous solution.