Unformatted text preview: The properties of PVOH are somewhat dependent on the degree of alcoholysis. An important characteristic of PVOH is its solubility in water. The polymers with 87-89% alcoholysis are readily soluble in cold water. However, the completely hydrolysed PVOH are only dissolved in water by heating to above 85 o C, due to high crystallinity and high melting temperature (Tm= 230 o C). The hydrophilic PVOH is resistant to a very wide range of organic solvents....
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This note was uploaded on 10/16/2010 for the course MATSE 441 at Penn State.