Thermodynamics of complex formation of polyacrylic acid with poly(N-vinyl-2-pyrrolidone) and chitosan
✍ Scribed by A. Pérez-Gramatges; W. Argüelles-Monal; C. Peniche-Covas
- Publisher
- Springer
- Year
- 1996
- Tongue
- English
- Weight
- 338 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0170-0839
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The hydrodynamic properties of dilute 80-'lutions of poly( N-vinyl-2-pyrrolidone) (PVP) and its Co(I1) complexes were studied by high-speed sedimentation and viscosimetry methods. Unperturbed dimensions of PVP in two solvents (ethyl alcohol and water) and those of PVP complexes with the cobalt ions
Blends of poly(N-vinyl-2-pyrrolidone) (PVP) with poly(hydroxyether of phenolphthalein) (PHP) and polyacrylonitrile (PAN) were prepared by casting from a common solvent and studied by differential scanning calorimetry. It was found that PVP was miscible with PHP and all the PVP/PHP blends were homog
Clear blends of chitosan with poly(N-vinyl-2-pyrrolidone) (PVP) made from aqueous solutions appear to be miscible from visual appearance. Infrared (IR) spectra used to investigate the carbonyl-hydroxyl hydrogen bonding in the blends indicated compatibility of two polymers on a molecular level. The I