摘要
通过表面张力、核磁等表征手段,研究了非离子表面活性剂TX-100在离子液体EAN纯溶剂以及EAN/聚乙二醇PEG-200混合溶液中的聚集行为。结果表明,TX-100在两种溶剂中均形成胶束;通过表征分析发现,TX-100在混合体系的表面张力和临界胶束浓度随着混合溶剂中PEG-200含量增加而增加,所形成的胶粒尺寸也增大;当混合溶剂中PEG-200含量固定时,随着温度升高,TX-100在两种体系中的cmc都增加;理论计算表明低温时是焓驱动形成胶束,高温时是熵驱动形成胶束。
The aggregation behavior of a nonionic surfactant,TX-100,in pure EAN and mixed solution of EAN/PEG-200 was investigated by surface tension measurement and NMR.The results indicated that spherical micelles were formed in both systems.With the increase of PEG-200 content in the mixed solvent,the surface tension,critical micelle concentration(cmc)and the size of the formed particles were increased.The cmc of TX-100 in the two systems increased with the increase of temperature.Theoretical calculations showed that the micellization of TX-100 in solution was enthalpy-driven at low temperature,and was entropy-driven at high temperature.
作者
李军
王杰
李晖
姚陈忠
谷莹秋
史利娟
LI Jun;WANG Jie;LI Hui;YAO Chen-zhong;GU Ying-qiu;SHI Li-juan(Department of Applied Chemistry,Yuncheng University,Yuncheng,Shanxi 044000,China;School of Chemistry&Materials Science,Jiangsu Normal University,Xuzhou,Jiangsu 221116,China;Key Laboratory of Coal Science and Technology,Ministry of Education and Shanxi Province,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China)
出处
《日用化学工业》
CAS
CSCD
北大核心
2020年第5期304-308,共5页
China Surfactant Detergent & Cosmetics
基金
国家自然科学基金资助项目(U1810110)
山西省面上自然基金项目(201901D111082)
山西省高等院校创新项目(201805D211037)
江苏省自然科学基金青年项目(BK20170232)
运城学院科技项目(XK-2019066)
煤科学与技术省部共建国家重点实验室培育基地开放课题资助项目(MKX201904)
塑料卫生与安全质量评价技术北京市重点实验室开放课题(BS201709)。
