Abstract
Using modified equations for the free energy of mixing of hydrogen bonded polymer blends that include the effects of intramolecular screening and functional group accessibility, we have been able to predict and duplicate experimentally observed miscibility maps for ethylene-stat-vinyl acetate blends with styrene-stat-4-vinyl phenol and 2,3-dimethylbutadiene-stat-4-vinyl phenol. Moreover, this work suggests that equilibrium constants determined from low molecular weight mixtures may be used to predict the phase behavior of analogous polymer blends, after due consideration is given to intramolecular screening and functional group accessibility, which are a direct consequence of chain connectivity.
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