Thickening of poly(vinyl alcohol) by borate
β Scribed by R. F. Nickerson
- Publisher
- John Wiley and Sons
- Year
- 1971
- Tongue
- English
- Weight
- 307 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Crosslinked poly(vinyl alcohol) (CPVA) microspheres were first prepared via the suspension polymerization of vinyl acetate and the alcoholysis of poly(vinyl acetate). Afterwards, a twoβstep method involving graft polymerization and Hofmann degradation was used to prepare functional poly
## Abstract In this study, hydrogels were prepared from blends of poly(vinyl alcohol) (PVA) and poly(vinyl pyrrolidone) (PVP). The miscibility of the polymers was confirmed with differential scanning calorimetry with the appearance of a single glassβtransition temperature. Additionally, a negative
Different crystal structure models have been proposed for atactic poly(vinyl alcohol) by two groups: Bunn and Sakurada et al. The models differ principally in the azimuthal angle of the planar zigzag backbone and the hydrogen bonding network. In the present study, reexamination of the crystal struct
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