CMC Determination of Sodium N-(α-Alkylphenoxy)-Tetradecanoyltaurate by Fluorescence Method

doi:10.7517/j.issn.1674-0475.2007.02.115

Abstract

Abstract: Ultraviolet absorption spectra,probe(pyrene) fluorescence emission spectra,and self-fluorescence emission spectra of aqueous solution of sodium N-(α-alkylphenoxy)-tetradecanoyltaurate(SAPTT) were investigated.It indicated that both probe(pyrene) fluorescence emission spectra method and self-fluorescence emission spectra method could be used to determine the critical micelle concentration (CMC) of sodium N-(α-alkylphenoxy)-tetradecanoyltaurate.The self-fluorescence emission spectra method was compared with probe(pyrene) fluorescence emission spectra method and Wilhelmy-plate(surface tension) method,and its sensitivity and accuracy was evident.

Key words: surfactant, sodium N-(α-alkylphenoxy)-tetradecanoyltaurate, self-fluorescence emission spectra, probe fluorescence emission spectra, critical micelle concentration

CLC Number:

YAN Feng, WANG Xian-guang, CAO Xu-long, SONG Xin-wang, LI Zhen-quan, ZHAO Sui, AN Jing-yi, YU Jia-yong. CMC Determination of Sodium N-(α-Alkylphenoxy)-Tetradecanoyltaurate by Fluorescence Method[J]. Imaging Science and Photochemistry, 2007, 25(2): 115-122.

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