十六烷基三甲基水杨酸铵水溶液的流变行为  

Rheological Behaviors of Cetyltrimethylammonium Salicylate in Aqueous Solution

作　　者：平阿丽[1] 邱召民 魏西莲[1] 

机构地区：[1]聊城大学化学化工学院,山东聊城252059 [2]聊城工业学校,山东聊城252000

出　　处：《聊城大学学报（自然科学版）》2013年第3期36-39,59,共5页Journal of Liaocheng University:Natural Science Edition

基　　金：国家自然科学基金项目(21073081);聊城大学教学研究项目(G201236;J201109);实验技术研究课题(JX201004)

摘　　要：研究了十六烷基三甲基水杨酸铵水溶液的流变性能.在0.6-15%(w%)的浓度范围内,体系中生成短棒状胶束,在低浓度时(0.4%-3%)体系呈现胶冻状外观。高于3%以后体系符合Maxwell流体行为,具有单一结构松弛时间.凝胶和Maxwell样的流体行为是因为体系中形成了三维网络结构,这种结构是由短棒状胶束之间以及水杨酸根与水分子之间形成的氢键构成.体系的高黏度来自于短棒状胶束之间的链接而不是缠结的长胶束.＂lhe rheologlcal experiments were carried out the mlCellar SOlUtlOnS as a iunctlon 01 sur- factant concentration. This system forms short, rodlike micelles. Rheological behavior at low concentra- tion displays gel-like behavior up to 3 ~, while it follows Maxwell uid behavior with a single stress re- laxation time above 3 %. The gel-like and Maxwell-like viscoelasticities originate in a three-dimensional network formed by hydrogen bond linkages between short rodlike micelles, connecting carboxyl groups of salicylate anions and water molecules. The high viscosity is from the linkages between short rodlike micelles rather than from entangled long micelles.

关 键 词：十六烷基三甲基水杨酸铵 流变性能 短棒状胶束 三维网络 

分 类 号：O64[理学—物理化学]