十六烷基三甲基水杨酸铵水溶液的电导和流变性能研究

doi:10.13218/j.cnki.csdc.2014.01.001

日用化学工业 ›› 2014, Vol. 44 ›› Issue (1): 1-5.doi: 10.13218/j.cnki.csdc.2014.01.001

• 基础研究 • 下一篇

十六烷基三甲基水杨酸铵水溶液的电导和流变性能研究

邱召民¹, 平阿丽², 魏西莲²

1.聊城工业学校,山东聊城 252000;
2.聊城大学化学化工学院,山东聊城 252059

收稿日期:2013-10-19 发布日期:2019-04-09
通讯作者: 魏西莲,教授,电话:(0635)8230613,E-mail:weixilian@lcu.edu.cn。
作者简介:邱召民(1970-),男,山东人,讲师,理学学士。
基金资助:
国家自然科学基金资助项目(21073081);聊城大学教学研究资助项目(G201236,J201109);聊城大学实验技术研究课题资助项目(JX201004)

Study of conductivity and rheological behaviors of cetyltrimethylammonium salicylate in aqueous solution

QIU Zhao-min¹, PING A-li², WEI Xi-lian²

1.Liaocheng Industrial School,Liaocheng,Shandong 252000,China;
2.College of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng,Shandong 252059,China

Received:2013-10-19 Published:2019-04-09

摘要/Abstract

摘要： 研究了十六烷基三甲基水杨酸铵水溶液在稀溶液和亚浓溶液范围的电导和流变行为。体系的电导率-浓度曲线显示2个转折点:第一个转折点对应临界胶束浓度(cmc),第二个对应体系开始形成棒状胶束的浓度。计算了胶束化的热力学函数变化,证实胶束化过程主要来自于焓驱动。流变实验表明:所有体系均显示剪切稀化行为;溶液质量摩尔浓度高于119 mmol·kg^-1时,体系符合Maxwell流体行为,具有单一结构弛豫时间;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蠕虫状胶束。

关键词: 十六烷基三甲基水杨酸铵, 流变性能, 短棒状胶束, 三维网络结构

Abstract: The conductivity and rheological behaviors of aqueous solution of cetyltrimetylammonium salicylate in dilute and semidilute range were studied.Profile of plot of conductivity vs.concentration of the system shows two inflection points.The first inflection point corresponds to the critical micelle concentration (cmc),while the second corresponds to the concentration that the rodlike micelles begin to form.The changes of thermodynamic functions of micellization were calculated and the results showed that the micellization is an enthalpy-driven process.The steady-state rheological experiment showed that all systems exhibit shear thinning behavior.When the mass mole concentration of the system is higher than 119 mmol·kg^-1,its rheological behavior is in line with Maxwell fluid behavior with a single stress relaxation time.The high viscosity behavior is caused by the linkages between short rodlike micelles rather than entangled wormlike micelles.

Key words: cetyltrimethylammonium salicylate, rheological behavior, short rodlike micelles, three-dimensional network structure

中图分类号:

TQ423.12

邱召民, 平阿丽, 魏西莲. 十六烷基三甲基水杨酸铵水溶液的电导和流变性能研究[J]. 日用化学工业, 2014, 44(1): 1-5.

QIU Zhao-min, PING A-li, WEI Xi-lian. Study of conductivity and rheological behaviors of cetyltrimethylammonium salicylate in aqueous solution[J]. China Surfactant Detergent & Cosmetics, 2014, 44(1): 1-5.

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十六烷基三甲基水杨酸铵水溶液的电导和流变性能研究

Study of conductivity and rheological behaviors of cetyltrimethylammonium salicylate in aqueous solution

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