Effects of temperature on the development of the internal structure of the cetyltrimethylammonium chloride/cetyl alcohol/water system
Effects of temperature on the development of the internal structure of the cetyltrimethylammonium chloride/cetyl alcohol/water system
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DOI：
10.1021/la9815087
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发表时间：
1999-10-26
期刊：
影响因子：
3.9
通讯作者：
Senna, M
中科院分区：
文献类型：
--
作者：
Yamagata, Y;Senna, M
将十六烷基三甲基氯化铵（C(16)CA）加入含有过量十六烷基醇（C16OH）聚集的白色球形固体球的饱和溶液中，无需搅拌即可自发生成半透明凝胶（STG）。将其内部结构与在75℃下混合搅拌制备的三元混合体系（TMS）的形貌和热性能进行了比较。TMS中的分散颗粒是多层状囊泡，而STG由各向异性片层组成。由于片层之间的含水量较高，因此片层的熔点比囊泡的熔点低。层间含水量对两种组合的结构差异起着至关重要的作用。
Cetyltrimethylammonium chloride (C(16)CA) is added to a saturated solution containing an excess of aggregated spherical white solid globules of cetyl alcohol (C16OH) to give a semitranslucent gel (STG) spontaneously without stirring. Its internal structure was compared by morphology and thermal properties with a ternary mixture system (TMS) of the same composition but prepared by mixing and stirring at 75 degrees C. While dispersed particles in the TMS are multilamellar vesicles, the STG consists of anisotropic lamellae. The melting point is lower for lamellae than for vesicles because of the higher water content between lamellae. The interlamellar water content plays a critical role in the structural difference between the two assemblies.