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ChemInform Abstract: Cryotropic Gelation of Poly(vinyl Alcohol) Solutions

✍ Scribed by V. I. LOZINSKY


Publisher
John Wiley and Sons
Year
2010
Weight
24 KB
Volume
30
Category
Article
ISSN
0931-7597

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πŸ“œ SIMILAR VOLUMES


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## Abstract Aqueous solutions of __Syndiotactic__‐rich poly(vinyl alcohol) (PVA) form thermally reversible gels. The volume of the solution decreases with gelling time on standing at isothermal condition. Assuming that the gelation is due to the crystallization of PVA, the kinetics of isothermal cr

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The melting temperature of the gels of the poly(vinyl alcohol) (PVA)/ethylene glycol (EG) system was measured. It was found that the temperature was independent of the thermal hysteresis. The apparent enthalpy of the fusion of the junction, DH, was 206 kJ/mol for a high molecular weight atactic PVA

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The properties of poly(vinyl alcohol) (PVA) hydrogels containing saccharides (D-xylose, D-fructose, D-glucose, and maltose) were examined. The effect of the addition of saccharides to PVA hydrogels on their melting temperatures was remarkable when the gels were chilled at 0Β°C with saccharide content