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Citation: Yali Li, Jianxun Fan, Bingjie Wang, Ling Xiang. 表面活性剂胶束化物理化学性质研究[J]. University Chemistry, ;2022, 37(1): 210303. doi: 10.3866/PKU.DXHX202103039 shu

表面活性剂胶束化物理化学性质研究

School of Chemistry and Material, Weinan Normal University, Weinan 714099, Shaanxi Province, China

Corresponding author: Yali Li, liiyaalii@126.com
Received Date: 16 March 2021

通过电导法考查温度和盐浓度对十二烷基硫酸钠（SDS）临界胶束浓度（CMC）的影响，研究表面活性剂形成胶束过程的物理化学性质。根据拟相分离模型求得胶束化热力学函数，并讨论体系电导活化能随温度和SDS浓度变化关系。结果表明：SDS的CMC随温度升高而增加，随氯化钠浓度增大而减小。在热力学上SDS在水溶液中形成胶束是一个自发、放热、熵增的过程；在动力学上，SDS溶液电导率与温度关系符合Arrhenius公式，通过电导活化能信息可揭示离子型表面活性剂形成胶束的机理特征。
- Surfactant,
- Critical micelle concentration,
- Quasi-phase separation model,
- Thermodynamics,
- Activation energy
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