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Gelation rates of poly(vinyl alcohol) solution

✍ Scribed by Masatoshi Ohkura; Toshiji Kanaya; Keisuke Kaji

Book ID
103351912
Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
428 KB
Volume
33
Category
Article
ISSN
0032-3861

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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