Effects of Amine Additives on Critical Micelle Concentration of Ionic Surfactants
Effects of Amine Additives on Critical Micelle Concentration of Ionic Surfactants
复制标题
胺类添加剂对离子表面活性剂临界胶束浓度的影响
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
Xiancheng Zeng
中科院分区：
文献类型：
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作者：
B. Jiang;J. Du;Siqing Cheng;Qian Wang;Xiancheng Zeng
摘要 本文描述了四种类型的胺（乙二胺、二亚乙基三胺、三亚乙基四胺、四亚乙基五胺）作为极性添加剂对缓冲溶液（I = 0.1 M KNO3、0.01 M Tris-TrisH+）中离子表面活性剂[十六烷基三甲基溴化铵（CTAB）和十二烷基硫酸钠（SDS）]临界胶束浓度（CMC）的影响。 7.00 ± 0.01 通过电导率。结果发现，这些表面活性剂的CMC均随着胺浓度的增加而降低，其影响程度依次为：四亚乙基五胺>三亚乙基四胺>二亚乙基三胺>乙二胺。基于这些结果，获得了几个经验线性模型。从实验数据可以看出，相同的胺对CTAB和SDS的CMC的降低程度大致相似，这可能归因于添加剂的极性和氢键相互作用。
Abstract This paper describes the effect of four types of amine (ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine) as polar additives on the critical Micellar concentrations (CMCs) of ionic surfactants, [cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS)] in buffered solutions (I = 0.1 M KNO3, 0.01 M Tris–TrisH+) at pH 7.00 ± 0.01 by electrical conductivity. It was found that the CMCs of these surfactants all decreased with increasing amine concentrations and the extent of effect followed the sequence: tetraethylenepentamine > triethylenetetramine > diethylenetriamine > ethylenediamine. Based on these results, several empirical linear models were obtained. From the experimental data, it is apparent that the extent of decreasing CMCs of CTAB and SDS by the same amine is roughly similar, and this may be ascribed to the polarity of additives and hydrogen bond interactions.