物理化学学报2011，Vol.27Issue(4)：913-917,5.
水杨酸钠对阳离子Gemini表面活性剂水溶液中蠕虫状胶束形成和性质的影响
Effect of Sodium Salicylate on the Formation and Properties of Wormlike Micelles in Aqueous Cationic Gemini Surfactant Solutions
摘要
Abstract
The effect of sodium salicylate (NaSal) on the formation and properties of wormlike micelles in aqueous solutions of 2-hydroxyl-propanediyl-a,ω-bis(dimethyldodecylammonium bromide) (12-3(OH)-12)and propanediyl-α, ω-bis(dlimethyldodecylammonium bromide) (12-3-12) at a surfactant concentration of 50 L-1. The addition of NaSal promoted micellar growth yielding wormlike micelles in both systems. 12-3(OH)-12 showed a more sensitive response to the added NaSal compared with 12-3-12 and formed wormlike micelles at relatively lower salt concentrations. Moreover, the wormlike micelles formed by 12-3(OH)-12 were longer than those formed by 12-3-12, resulting in higher viscosity for the former solution.These were attributed to the hydrogen bonding interactions between the hydroxyl substituted spacers in the 12-3(OH)-12 system, which increased hydration on the aggregate surface and stimulated the dissociation of counterions. The higher charge on the 12-3(OH)-12 micellar surface was strongly associated with Sal-, which led to a tighter packing of the suffactant molecules in the micelles and thus strengtheoed the intermolecular hyclrogen bonding interactions and effectively reinforced the growth of the 12-3(OH)-12 micelles.关键词
阳离子Gemini表面活性剂/NaSal/蠕虫状胶束/流变性质/分子间氢键Key words
Cationic geminisurfactant/NaSal/Wormlike micelle/Rheologicalproperty/Intermolecular hydrogen bond分类
化学化工引用本文复制引用
裴晓梅,赵剑曦,魏西莲..水杨酸钠对阳离子Gemini表面活性剂水溶液中蠕虫状胶束形成和性质的影响[J].物理化学学报,2011,27(4):913-917,5.基金项目
The project was supported by the National Natural Science Foundation of China (20673021,20873024,21073081).国家自然科学基金(20673021,20873024,21073081)资助项目 （20673021,20873024,21073081）
