摘要
应用拟二元体系方法将非理想二元混合表面活性剂体系的吸附理论推广到非理想三元体系并建立了三元体系的表面张力方程．由此对含有３个组分的多元体系，根据各单一表面活性剂体系的γ－ ｌｇＣ曲线和所有两组分间的相互作用参数βｓｉｊ（ｉ＝ １．２．３？ｊ＝ １．２．３？ｉ≠ｊ ）即可预测达到给定表面张力下降所需的不同体相组成的混合体系的浓度和混合吸附单层的组成，或者应用所建表面张力方程预测混合物溶液的表面张力．应用于ＡＥＳ／ＡＥＯ９／ＤＰＣｌ＋ ０．１ ｍ ｏｌ／Ｌ ＮａＣｌ非理想三元混合体系，理论预测结果与实验结果一致．
The nonideal mixed adsorption theory for binary surfactant mixtures is extended to ternary and multi component systems by using pseudo binary system method,and the surface tension equations for multi component systems are established.Thus for a nonideal ternary system,the concentration of mixtures required to produce a certain surface tension reduction and the composition of mixed monolayer can be predicted based on γ- lg C relationships of individual components and β s ij (i=1,2,3;j=1,2,3;i≠j),interaction parameters between pairs of components in binary mixed monolayers,and the surface tension of mixture solutions can be predicted by the surface tension equaions established.Good agreements between predicted and experimental results have been obtained when applied to AES/AEO 9/DPCl ternary systems at the presence of 0.1 mol/L NaCl.
关键词
表面活性剂
三元体系
非理想混合
吸附
表面张力
surface tension equation,ternary system,multi component system,nonideal mixed adsorption,surface tension
