THE BINARY SYSTEMS OF WATER WITH DODECYLAMMONIUM CHLORIDE AND ITS N-METHYL DERIVATIVES
THE BINARY SYSTEMS OF WATER WITH DODECYLAMMONIUM CHLORIDE AND ITS N-METHYL DERIVATIVES
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DOI：
10.1021/ja01151a104
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发表时间：
1951-01-01
影响因子：
15
通讯作者：
HARWOOD, HJ
中科院分区：
文献类型：
--
作者：
BROOME, FK;HOERR, CW;HARWOOD, HJ
在整个浓度范围内研究了十二烷基氯化铵及其N-甲基、二甲基和三甲基衍生物与水的体系。这些体系中的每一个的特征在于形成水合物，该水合物与水形成简单的低共熔物并具有升高的熔点。叠加在这些系统上的是指示各种液晶取向的介晶区域。在主盐和副盐体系中，稀溶液的液相线由于在胶束形成区发生所谓的“克拉夫特效应”而突然改变。在57.5 ℃时，主盐的液相线进一步被结晶转变所中断，在所有四个体系中都观察到了不稳定的晶体形式。最近关于N-甲基化对十二烷基氯化铵物理性质影响的报道包括在己烷、苯和乙醇中的溶解度以及在水溶液中的电导率的研究。由于对这些材料的兴趣主要集中在它们的胶体和胶体电解质性质上，因此研究范围已扩大到包括它们与水的二元体系。本文给出了十二烷基氯化铵及甲基、二甲基和三甲基十二烷基氯化铵与水的相图。
The systems of dodecylammonium chloride and its N-methyl, dimethyl and trimethyl derivatives with water have been investigated over the entire range of concentration. Each of these systems is characterized by the formation of a hydrate which forms a simple eutectic with water and possesses an incongment melting point. Superimposedupon these systems are mesomorphic regions indicative of various liquid crystallineorientations. In the primary and secondary salt systems the liquidus curve in dilute solution is altered abruptly bythe occurrence of the so-called “Krafft effect” in the region of micelle formation. The liquidus curve of the primary salt is further interrupted by a crystalline transformation at 57.5, unstable crystal forms havebeen observed in all four systems. The similarity of these diagrams with those of the soap-water systems has been mentioned.Recent reports on the influence of N-methylation on the physical properties of dodecylammonium chloride have included studies of solubilities in hex-ane, benzene and ethanol2 and electrical conduct-ances in aqueous solution. 3 Since much ofthe in-terest in these materials centers in their colloidal and colloidal-electrolytic nature, the studies have been extended to include theirbinary systems with water. This paper presents the phase diagrams with water of dodecylammonium chloride and methyl-, dimethyl-and trimethyldodecylammonium chlorides.