State Analysis of Water in Polyether-Polyol by High-Frequency Spectroscopy

Water molecules in polyether-polyol have been analyzed by high-frequency spectroscopy. It has been inferred that there exist two types of H2O in polyether-polyol. The first type are those which coordinate directly to the OH group at the end of the polyol chain. The frequency of the maximum absorptio...

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Published in:Analytical Sciences 1999, Vol.15(11), pp.1083-1086
Main Authors: TAKEI, Takaya, KAGESHIMA, Kazuki, TOMITA, Megumi, SUGITANI, Yoshinori, MIN, Kyon Hun, MATSUMOTO, Kiyoshi
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Physical and chemical studies. Granulometry. Electrokinetic phenomena
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cited_by cdi_FETCH-LOGICAL-c582t-44597c68498bb02f35aec171b18948c331ebd2a15964f440ea326157de36c6333
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container_title Analytical Sciences
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description Water molecules in polyether-polyol have been analyzed by high-frequency spectroscopy. It has been inferred that there exist two types of H2O in polyether-polyol. The first type are those which coordinate directly to the OH group at the end of the polyol chain. The frequency of the maximum absorption peak of these water molecules do not shift with increasing content of H2O in the high-frequency spectra; these may be referred to as non-freezable water. The second type are those which bond to the EO chain in the polyol. Excess water molecules which exist near or in the neighborhood of these H2O should also be included in the second type one. The second type may be referred to as freezable water. These show a frequency shift which reflects the degree of restraint of H2O in the polyol.
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subjects Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Physical and chemical studies. Granulometry. Electrokinetic phenomena
title State Analysis of Water in Polyether-Polyol by High-Frequency Spectroscopy
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