Abstract
AbstractThe viscosity of dilute solutions of polyvinyl alcohol was measured in aqueous and aqueous phenol systems. In the aqueous solution, Huggins' relation does not hold and a2 = 2.01 × 10−1 [η]2.28 was obtained. In the aqueous phenol solution, Huggins' relation holds very well. The relation between a2 and [η] in both systems is independent of the polymerization conversion of the original polyvinyl acetate. The exponent α of [η] = KMα is greater in the aqueous phenol system than in aqueous solution, showing that the aqueous phenol is a better solvent than water.
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