Adsorption and micelle formation of alkylammonium chloride-alkyltrimethylammonium chloride mixtures.
Adsorption and micelle formation of alkylammonium chloride-alkyltrimethylammonium chloride mixtures.
复制标题
烷基氯化铵-烷基三甲基氯化铵混合物的吸附和胶束形成。
DOI：
10.1016/j.jcis.2007.01.096
复制
发表时间：
2007
影响因子：
9.9
通讯作者：
M. Aratono
中科院分区：
文献类型：
--
作者：
Y. Hayami;A. Wataya;T. Takiue;N. Ikeda;H. Matsubara;M. Aratono
在298.15 K时，测定了(1)十二烷基氯化铵(DAC) -十四烷基三甲基氯化铵（TTAC）、(2)十二烷基三甲基氯化铵(DeAC) -十二烷基三甲基氯化铵（DTAC）和(3)DAC - DTAC二元阳离子表面活性剂混合物水溶液的表面张力随表面活性剂总质量摩尔浓度和组成的函数。评价了表面活性剂在吸附膜和胶束中的组成，构建了吸附相图和胶束形成相图。此外，还计算了吸附和胶束形成的多余吉布斯能，以估计与相应理想混合的偏差。发现(1)和(2)的表面和胶束富集于三甲基铵盐，而(3)的表面和胶束富集于铵盐。另一方面，在所有体系的临界胶束浓度（CMC）下，与表面相比，胶束中三甲铵盐含量丰富。从表面活性剂的头基结构和极性头基大小与烃类链长差异的匹配度两方面阐明了表面活性剂的混相性。
The surface tension of the aqueous solutions of binary cationic surfactant mixtures of (1) dodecylammnonium chloride (DAC)–tetradecyltrimethylammonium chloride (TTAC), (2) decylammonium chloride (DeAC)–dodecyltrimethylammonium chloride (DTAC), and (3) DAC–DTAC was measured as a function of the total molality and composition of surfactants at 298.15 K. The compositions of surfactants in the adsorbed film and micelle were evaluated and the phase diagram of adsorption and that of micelle formation were constructed. Furthermore the excess Gibbs energies of adsorption and micelle formation were calculated to estimate the deviation from the corresponding ideal mixing. It was found that the surface and micelle are enriched in trimethylammonium salts in (1) and (2), while in ammonium salt in (3) compared to the bulk solution. On the other hand, the micelle is enriched in trimethylammonium salts compared to the surface at the critical micelle concentration (CMC) in all the systems. The miscibility of the surfactants was clarified from the standpoints of the structure of the head group and of the matching between the size of polar head group of surfactants and the difference in hydrocarbon chain length.
烷基链长度对同系阳离子表面活性剂混合物中协同吸附和胶束形成的影响
DOI：
--
发表时间：
2005
期刊：
Langmuir 21
影响因子：
--
作者：
K.Kashimoto;Y.Takata;T.Matsuda;N.Ikeda;H.Matsubara;T.Takiue;M.Aratono;H.Tanida;I.Watanabe;K.Kashimoto et al.;S.Azizian;H.Matsubara;R.Murakami;H.Matsubara et al.;H.Iyota et al.;Y.Takata et al.;H.Matsubara et al.
通讯作者：
H.Matsubara et al.