【摘要】 分别以氯乙酸乙二醇双酯、氯乙酸一缩二乙二醇双酯、氯乙酸二缩三乙二醇双酯、氯乙酸三缩四乙二醇双酯与十二烷基二甲基胺反应,合成了4种连接基为聚氧乙烯醚双乙酸酯基的双子季铵盐阳离子表面活性剂(分别记为SAA1、SAA2、SAA3、SAA4),用IR谱、1H-NMR谱表征了其结构,利用荧光探针方法测定了胶束聚集数及胶束浓度,并研究了其水溶液的性质.结果表明:SAA1、SAA2、SAA3、SAA4的临界胶束浓度分别为0 91、0 71、0 69、0 32mmol/dm3.当表面活性剂浓度为1 4×10-2mol/L时,SAA1、SAA2、SAA3、SAA4的胶束聚集数分别为32、36、38、48,胶束浓度分别为4 0×10-4、3 8×10-4、3 3×10-4、2 8×10-4mol/L.SAA1、SAA2、SAA3、SAA4的瞬时泡高分别为162、168、173、175mm.更多还原

【Abstract】 Through N-alkylation of N, N-dimethyl dodecyl amine with according polyglycol di-chloracetates, glycol dichloracetate, diglycol dichloracetate, triglycol dichloracetate and tetraglycol dichloracetate, four kinds of gemini cationic surfactant were synthesized, respectively. The molecular structures of these surfactants were characterized by IR and ¹HNMR spectrum, respectively. The cmc values of the Gemini cationic surfactants SAA1, SAA2, SAA3, SAA4 were 0.91, 0.71, 0.69, 0.32 mmol/dm³, respectively. The aggregation numbers of micelle of SAA1, SAA2, SAA3, SAA4 were 32, 36, 38, 48, respectively and the concentrations of micelle were （4.0×）10^-4, 3.8×10^-4, 3.3×10^-4, 2.8×10^-4 mol/L, respectively when C=1.4×10^-2 mol/L. Their foam powers were 162, 168, 173, 175 mm, respectively.更多还原