混合表面活性剂对有机物的增溶作用

研究了3-烷氧基-2-羟而基三甲基氯化铵（RnTAC）和十二烷基磺酸钠（AS）、十二烷基硫酸钠（SDS）混合体系对正丁醇、正戊醇、正己醇、苯甲醇、正辛醇、环乙烷、正己烷、四氯化碳、苯、甲苯、正庚烷和正癸烷的增溶作用.结果表明,混合体系对极性物的增溶均低于两单纯体系,曲线呈“V”型,物质的量比为1:1时增溶量最小.而对非极性物的增溶呈“马鞍”型,量比为1:1时增溶量最大.

Solubilization of Mixed System of Anionic-cationic Surfactant

The solubilization of n-butanol,n-pentanol,l-hexanol,benzyl alcohol, l-octanol,cyclohexane,n-hexane, carbon tetrachloride, benzyl, toluene, n-heptane and n-decane in mixed solution of 3-alkoxyl-2hydroxylpropyl trimethyl ammonium chloride(RnTAC) with sodium dodecyl sulfate(SDS) ,or sodium do-decyl sulfonate(AS)have been studied. The experimental results show that the solubilizing ability of mixture system in lower for polar substances than that of single surfactant aqueous solution. "V"type isotherm curves of solubilized amount of polar solute has been observed,and minimum solubilized amount is at the molar ratioh1 : 1 of RnTAC/SDS or RnTAC/AS. However the solubilizing ability of mixture surfactants for non-polar substances is stronger than that of single surfactant solution, the solubilizing isotherm curves present "saddle "shape, and maximum solubilized amount is at the molar ration 1 : 1of RnTAC/SDS or RnTAC/AS.