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
Phase separation phenomena of polysulfone/solvent/organic nonsolvent and polyethersulfone/solvent/organic nonsolvent systems
β Scribed by Dongliang Wang; K. Li; S. Sourirajan; W. K. Teo
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 652 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0021-8995
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π SIMILAR VOLUMES
In this work, the ternary phase diagrams in three nonsolvent/solvent/ PMMA systems ( n-hexane/ n-butyl acetate/PMMA, water/acetone/PMMA, and n-hexane/acetone/PMMA) were constructed by theoretical calculation and experimental measurement. Binodal curves were calculated by using the Flory-Huggins theo
It is probable that some contaminants will not respond to the FPD and thereby invalidate any purity calculation. However, this detector is very useful in detecting the presence of any tin compounds in addition to the one of interest during the purification steps. The high sensitivity of HRGC/FPD mak