The Study of Aggregation Properties of Sodium Guerbet Tetradecyl Polyoxyethylene Ether Carboxylate by Steady-State Fluorescence

doi:10.7517/j.issn.1674-0475.2006.02.110

Abstract

Abstract: Critical micelle concentration(CMC) and micelle aggregation number(N) of the four branched surfactants sodium Guerbet tetradecyl polyoxyethylene ether carboxylate were determined by steady-state fluorescence probe method in which pyrene was used as fluorescence probe and benzophenone as quencher.The results showed that the CMC of this kind of surfactants can be determined by steady-state fluorescence probe,which fairly approached to that determined by surface tension method.Critical micelle concentration(CMC) and micelle aggregation number(N) decreased with the increasing of number of ether oxide units for all four surfactants,while the micropolarity of the micelles was less sensitive to the increasing of number of ethylene oxide units.

Key words: micelle, steady-state fluorescence quenching, critical micelle concentration, micelle aggregation number, micropolarity, sodium Guerbet tetradecylpolyoxyethylene ether carboxylate

CLC Number:

ZHU Rong-xian, JING Zhi-qiang, ZHANG Lu, ZHAO Sui, YU Jia-yong. The Study of Aggregation Properties of Sodium Guerbet Tetradecyl Polyoxyethylene Ether Carboxylate by Steady-State Fluorescence[J]. Imaging Science and Photochemistry, 2006, 24(2): 110-117.

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