The cloud point curves for polysulfone (PSf)/solvent/water systems were determined by a titration method. A small amount of water was needed to induce liquid-liquid demixing and the temperature effect was small. From numerical calculations, it was found that the binary interaction parameters for the
Phase separation in carboxylated polysulfone/solvent/water systems
β Scribed by Wayne W. Y. Lau; Michael D. Guiver; T. Matsuura
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 465 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0021-8995
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To construct a phase diagram of the polysulfone (PSF)/polyethersulfone (PES)/N-methyl-2-pyrrolidone (NMP)/water quaternary system, cloud point measurements were carried out by a titration method. The miscible region in the PSF/PES/ NMP/water quaternary system was narrow compared to the PSF/NMP/water
Phase separation phenomena of polyetherimide (PEI)/solvent/nonsolvent systems were investigated by measuring their precipitation values over the temperature range from 20 to 50Β°C. The solvents used are N-methyl-2-pyrrolidone (NMP), dimethylacetamide (DMAC), and dimethylformamide (DMF). Nine nonsolve
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