✦ LIBER ✦
The Association of Tetraalkylammonium Ions with Poly(vinyl methyl ether) in Water and its Effect on Phase-Separation Behavior as Studied by Micro-Raman Spectroscopy
✍ Scribed by Yasushi Maeda; Hiroki Yamamoto; Isao Ikeda
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 138 KB
- Volume
- 25
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
Summary: The thermosensitive phase‐separation of poly(vinyl methyl ether) in water has been investigated by micro‐Raman spectroscopy in the presence of tetraalkylammonium bromides. The equilibrium distribution of both polymer and salts to the polymer‐rich and solvent‐rich phases was determined as a function of temperature. Tetraalkylammonium ions with longer alkyl chains associate more strongly with PVME and raise the phase‐transition temperature due to an increase in hydrophilicity.
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