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| FT-IR studies on the conformation and effective head-group area of AOT molecules in W/O microemulsions | |
| 作者姓名： | 周国伟 李干佐 陈文君 LOU Anjing 鲍猛 |
| 作者单位： | ZHOU Guowei LI Ganzuo，CHEN WenjunLOU Anjing & BAO MengKey Laboratory for Colloid and Interface Chemistry of Ministry of Education of China，Shandong University，Jinan 250100，China;Langmuir Center for Colloids and Interfaces，Columbia University |
| 基金项目： | This work was supported by the National Natural Science Foundation of China (Grant No. 29973023)，Visiting Scholar Foundation of Ministry of Education and State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum Institu |
| 摘 要： | Using Fourier transform infrared(FT-IR) spectroscopy technique, the carbonyl stretching vibration bands of AOT in sodium bis(2-ethylhexyl)sulfosuccinate (AOT)/isooctane/water reverse (W/O) microemulsions system have been investigated by least square curve fitting. The results indicate that an asymmetric adsorbed peak of carbonyl stretching vibration of AOT molecule is situated in (1739 ± 1) and (1725 ± 2) cm-1. The two peaks correspond to different carbonyls in gauche conformation and trans conformation of AOT molecules, respectively. With different water contents (W0), the variations of peak intensity ratio (/= l1739/l1725) reflect the change of the ratio for the two conformation populations and the variations of the effective head-group area of AOT molecule have relations to the ratio of two conformation populations. |
| 收稿时间： | 29 August 2002 |
FT-IR studies on the conformation and effective head-group area of AOT molecules in W/O microemulsions |
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| Zhou Guowei, Li Ganzuo, Chen Wenjun, Lou Anjing and Bao Meng.FT-IR studies on the conformation and effective head-group area of AOT molecules in W/O microemulsions[J].Science in China(Chemistry),2002,45(1):68-72. | |
| Authors: | Zhou Guowei Li Ganzuo Chen Wenjun Lou Anjing and Bao Meng |
| Institution: | 1. Key Laboratory for Colloid and Interface Chemistry of Ministry of Education of China, Shandong University, Jinan 250100, China; 2. Langmuir Center for Colloids and Interfaces, Columbia University, New York 10027, USA; 3. Chemistry Department of Jinan University, Jinan 250106, China |
| Abstract: | Using Fourier transform infrared(FT-IR) spectroscopy technique, the carbonyl stretching vibration bands of AOT in sodium bis(2-ethylhexyl)sulfosuccinate(AOT)/isooctane/water reverse(W/O) microemulsions system have been investigated by least square curve fitting. The results indicate that an asymmetric adsorbed peak of carbonyl stretching vibration of AOT molecule is situated in(1739 ± 1) and(1725 ± 2) cm-1. The two peaks correspond to different carbonyls in gau-che conformation and trans conformation of AOT molecules, respectively. With different water contents(W0), the variations of peak intensity ratio(Ir1 = I1739/I1725) reflect the change of the ratio for the two conformation populations and the variations of the effective head-group area of AOT mo-lecule have relations to the ratio of two conformation populations. |
| Keywords: | W/O microemulsion FT-IR least square curve fitting molecular conformation |
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