Micro-Raman study of barium sulphate coprecipitated with potassium ions

The Association of Tetraalkylammonium Io

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

✍ Yasushi Maeda; Hiroki Yamamoto; Isao Ikeda 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 138 KB

## 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