离子液体表面活性剂的合成与应用(Ⅴ)——离子液体表面活性剂的聚集热力学和状态

doi:10.13218/j.cnki.csdc.2017.05.003

Abstract

Abstract: Aggregation of ionic liquid surfactants in aqueous solution is an entropy driven process,according to the data of its ΔG⁰,ΔH⁰ and ΔS⁰.Aggregation number of ionic liquid surfactants is similar to that of traditional surfactants,40-160 in general.The apparent hydrodynamic diameter (D_h) of surfactant aggregation is several nanometers;but in case the concentration of the ionic liquid surfactant is high as forming vesicles,D_h may achieve 100 nm.Ionization degree of counter ions at the surface of surfactant micelles is about 0.15-0.6.Aggregation behavior of ionic liquid surfactants in water is similar to that of traditional surfactant,but the aggregation behavior of ionic liquid surfactants in water is different with that in organic solvents.

Key words: surfactant, ionic liquid, micelle, thermodynamics, aggregation behavior

CLC Number:

TQ423

ZOU Wen-yuan, YANG Xu-zhao, XU Qing-jie, WANG Ping, WANG Jun. Synthesis and application of ionic liquid surfactants (Ⅴ)Thermodynamics and behavior of surfactant aggregation[J].China Surfactant Detergent & Cosmetics, 2017, 47(5): 251-256.

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Synthesis and application of ionic liquid surfactants (Ⅴ)Thermodynamics and behavior of surfactant aggregation

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