摘要
表面活性剂的一个重要性质是其临界胶束浓度(CriticalMicelleConcentration,简称CMC)[1]。本文利用电导率法分别对阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)和阴离子表面活性剂十二烷基硫酸钠(SDS)的CMC进行了研究,测试了这两种离子型表面活性剂在不同温度及添加不同量的无机盐NaCl和有机物乙醇时电导率变化,从而得到温度、NaCl、乙醇对CTAB、SDS的临界胶束浓度的影响规律,并对有关实验结果作了探讨。
Critical micelle concentration(CMC) is an important parameter of surfactants. CMC is one of the marks of the formation of micelles in the surfactant's aqueous solutions. Studies on the effect of different additive on CMC have the theoretical and practical meanings. Cetyltrimethylammonium bromide (CTAB) is a cationic surfactant;Sodium Dodecyl Sulfate(SDS) is a anionic surfactant. In this paper, The CMC of CTAB and SDS are studied by the method of conductivity. The effects of different temperature and the addition of ethanol and inorganic salts are determined and discussed.
出处
《常熟高专学报》
2003年第4期45-49,共5页
Journal of Changshu College
