Abstract

The structure and morphology of aqueous dispersions, the gelation, and the intermolecular interactions of water molecules with a Synthanol ALM-10 non-ionic low-molecular surfactant have been investigated using viscosimetry, thermogravimetric analysis, IR spectroscopy, and phase-contrast and polarization optical microscopy in the entire range of concentrations (from 0 to 100 wt %). The polymorphism and polydispersity of Synthanol ALM-10 micelles have been detected. We have determined the gelation mechanism in aqueous dispersions containing from 40 to 70 wt % of amphiphilic molecules. It is found that an increase in the concentration in Synthanol ALM-10 dispersions is accompanied, first, with the formation of inverse micelles of the surfactant, followed by sequential alteration of lyotropic mesophases with the hexagonal symmetry and new forms of bound water associated with the formation of clathrate hydrates. The viscosity of the system increases significantly in this case. At high concentrations of Synthanol ALM-10 (exceeding 70 wt %), inverse micelles are mainly observed.

中文翻译：

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非离子表面活性剂两亲分子浓度对水分散体结构和凝胶化的影响

摘要

使用粘度测定，热重分析，红外光谱以及相衬和偏振光学技术研究了水分散体的结构和形态，胶凝作用以及水分子与Synthanol ALM-10非离子型低分子表面活性剂的分子间相互作用。在整个浓度范围内（从0到100 wt％）进行显微镜检查。已经检测到合成乙醇ALM-10胶束的多态性和多分散性。我们已经确定了包含40至70重量％的两亲分子的水分散体中的胶凝机理。发现合成乙醇ALM-10分散体中浓度的增加首先伴随着表面活性剂反胶束的形成，然后依次改变具有六边形对称性的溶致中间相和与包合物水合物形成相关的结合水的新形式。在这种情况下，系统的粘度显着增加。在高浓度的合成乙醇ALM-10（超过70 wt％）下，主要观察到反胶束。