Low Molecular Mass Gelators of Organic Liquids and the Properties of Their Gels
Low Molecular Mass Gelators of Organic Liquids and the Properties of Their Gels
复制标题
DOI：
10.1002/chin.199811319
复制
发表时间：
1998-03
期刊：
影响因子：
--
通讯作者：
P. Terech;R. Weiss
中科院分区：
文献类型：
--
作者：
P. Terech;R. Weiss
本文综述了由有机液体和低浓度（通常<2wt%）相对低分子质量分子（即胶凝因子）组成的热可逆粘弹性类液体或类固体材料（即有机凝胶）的性质。有机凝胶的物理特性可以从溶液中的表面活性剂1（例如，胶束化，溶致性和结晶）到聚合物溶液2（例如，溶胀和微观质量运动）;凝胶位于“复杂流体”3和物质相分离状态之间的界面。有机凝胶的一些重要的物理性质，用于探测其性质和结构的技术，以及涉及在有机液体中的凝胶因子聚集的基本热力学概念将被讨论。胶体状态，凝胶，识别比定义更容易”。[4]这一定义和其他对凝胶态的经验定义，包括托马斯·格雷厄姆在1861年的第一个定义，[5]都依赖于
This review explores the properties of thermallyreversible viscoelastic liquidlike or solidlike materials (ie, organogels) comprised of an organic liquid and low concentrations (typically< 2 wt%) of relatively low molecular mass molecules (ie, gelators). The physical characteristics of organogels can range from those of surfactants in solution1 (eg, micellization, lyotropism, and crystallization) to those of polymer solutions2 (eg, swelling and microscopic mass motion); gels are at the interface between “complex fluids” 3 and phase-separated states of matter. Some of the important physical properties of organogels, the techniques used to probe their properties and structures, and the basic thermodynamic concepts involved in gelator aggregation in organic liquids will be discussed.As noted prophetically by Dr. Dorothy Jordon Lloyd nearly 70 years ago,“.... the colloid condition, the gel, is easier to recognize than to define”. 4 This and other empirical definitions of the gelled state, including the first by Thomas Graham in 1861, 5 relied on the