Poly(viny1 alcohol) (PVA) is soluble only in water and so some important derivatives like esters cannot be prepared from PVA. The 100% conversion of PVA to acetal is also elusive as there is strong intermolecular and intramolecular hydrogen bonding. However, PVA can be dissolved in a nonaqueous medi
Development of a novel catalyst for solution of poly(vinyl alcohol) in nonaqueous medium
β Scribed by P. Chetri; N. Islam; N. N. Dass
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 232 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0887-624X
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π SIMILAR VOLUMES
Solubility of poly(vinyl alcohol) (PVA) in water prevents the preparation of various derivatives through homogeneous techniques as most of the derivatives thus formed are insoluble in aqueous medium. There are a number of solvents that can swell PVA under hot conditions but cannot dissolve PVA. In t
The freeze-dried samples prepared from dilute PVA aqueous solutions and PVAΓiodine complex aqueous solutions have been examined using a scanning electron microscope. The samples prepared from syndiotacticity-rich PVA (S-PVA) solutions were found to have a network structure due to the formation of in