The effect of the steric structure of the original polyvinyl alcohol on the rate of hydrolysis of polyvinyl acetal derived therefrom has been investigated. As the syndiotactic content of the original polyvinyl alcohol increased, the acetal derived therefrom became more easily hydrolyzable. Confirmation on the model compound led to the same conclusion; acetal derived from dl‐type pentane‐2,4‐diol (corresponds to the syndiotactic portion) hydrolyzed more easily than that from the meso‐type diol (corresponds to the isotactic portion). These results are entirely consistent with that expected from the conformational view.
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Fujii et al. (1963) studied this question.
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