FT-IR AND MICROCALORIMETRY STUDIES ON WATER/TX-100/HEXANOL/OCTANE REVERSE MICROEMULSION SYSTEM |
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Authors: | Hong-Xia Zeng Zhi-Ping Li Han-Qing Wang |
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Institution: | 1. XingJiang Institute of Chemistry, Chinese Academy of Sciences , Urumqi, 830011, P. R. China;2. LanZhou Institute of Chemical Physics, Chinese Academy of Sciences , LanZhou, 730000, P. R. China |
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Abstract: | ABSTRACT Water/TX-100/Hexanol/Octane reverse microemulsions were investigated by Microcalorimetry and FT-IR. Experiments show that the formation of this reverse microemulsion is an exothermic process, and it's a two-step reaction. The first step is action of TX-100 monomers with water to form hydrogen bond while the second is interaction between polyethylene oxide groups in reverse micelles and water. The characterizations of FT-IR and Microcalorimetry indicate that aqueous core of the microemulsion droplets are composed of bound and free water while a small amount of trapped water, OH stretching vibration peak of bound water, free water, and trapped water are at 3400 ±20 cm?1, 3220 ± 20 cm?1, and 3550 ± 20 cm?1 respectively. Polyethylene oxide ether of TX-100 is prior to phenyl ether in acting with water because its polarity is stronger than phenyl ester. |
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Keywords: | Microcalorimetry FT-IR Reverse Microemulsion TX-100 |
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