STUDY OF AEROSOL-OT REVERSE MICELLE FORMATION BY INFRARED-SPECTROSCOPY

被引：46
|
作者：
DANGELO, M [1 ]
ONORI, G [1 ]
SANTUCCI, A [1 ]
机构：
[1] UNIV PERUGIA,DIPARTIMENTO FIS,I-06100 PERUGIA,ITALY
来源：
JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 12期
关键词：
D O I：
10.1021/j100063a023
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
IR spectroscopy was applied to the study of micelle formation in aerosol OT [bis(2-ethylhexyl)sodium sulfosuccinate] systems. Dependence of the infrared spectra on surfactant concentration at fixed [H2O]/[surfactant] ratios in the range 0.2-10 has been determined at very low surfactant concentrations {1 X 10(-5) to 1.4 x 10(-3) mol.L-1} where microaggregate formation is observed. Effects on the molar extinction coefficients of the bands due to C-H stretching vibrations can be used as indicators of micelle formation, and they appear to be independent of the amount of water in the system. The results are discussed in terms of pseudophase and multiple equilibrium models of micelle formation.
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收藏
页码：3189 / 3193
页数：5
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