Thermoanalytical investigation on the coagel-gel-liquid crystal transition in some water-amphiphile systems
Thermoanalytical investigation on the coagel-gel-liquid crystal transition in some water-amphiphile systems
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某些水-两亲物体系中凝固凝胶-凝胶-液晶转变的热分析研究
DOI：
10.1007/bfb0114154
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
S. Seki
中科院分区：
文献类型：
--
作者：
M. Kodama;S. Seki
对表面活性剂（十八烷基三甲基氯化铵和硬脂酸钾）和卵磷脂（双棕榈酰磷脂酰胆碱）等水和两亲性物质二元体系的热分析研究表明，随着水含量的增加，由于所谓的链熔化，tctransition曲线逐渐降低。对样品进行详细和仔细的退火处理表明，在低于tccurves的温度下，存在与所谓的凝固到凝胶相对应的新相变。对于这种转变，我们提出了相图中所示的符号曲线。此外，还精确地考察了tgeltransition与融冰现象之间的相互关系，并指出了在tgeltransition中两亲分子双层之间的“新加入水（中间水）”的主导作用。
Thermoanalytical studies on the binary systems of water and amphiphiles such as surfactant (octadecyltrimethyl ammonium chloride and potassium stearate) and lecithin (dipalmitoyl phosphatidylcholine) revealed the stepwise decreasingTctransition curves, due to the so-called chain-melting, with increasing water content. Detailed and careful annealing treatment for the samples indicated the existence of a new phase transition corresponding to the so-called coagel-to-gel at a temperature below theTccurves. For this transition, we proposed the symbolTgelcurve shown in the phase diagram. Furthermore, the interrelationship between theTgeltransition and the ice-melting phenomena was examined precisely and the predominent roles of ‘newly incorporated water (intermediate water)’ between the bilayers of the amphiphilic molecules at theTgeltransition was pointed out.