The heats of dilution of P. V. A. solutions were measured and the interaction parameter α between P. V. A. and water was found to be in the range of −2∼−4cal./cc. That these values are remarkably lower than that of ethanol solution suggests the presence of strong intersegmental hydrogen bonds of P. V. A.. The effect of pre-heating was also observed. It may be attributed to the increase of intersegmental associations by heating.
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Amaya et al. (1956) studied this question.
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