PREDICTION OF THERMODYNAMIC PROPERTIES OF NOVOLAK-TYPE PHENOLIC RESINAND ALIPHATIC POLYESTER BLENDS - PAINTER-COLEMAN ASSOCIATION MODEL STUDY OF COMPOSITIONAL HOMOGENEITY

The interassociation constants of Painter-Coleman association model, o btained from the results of Fourier transform infrared spectroscopy of low molecular weight analogues in dilute solution, were used to predi ct the thermodynamic properties of phenolic and polyester polymer blen ds. The miscibility window, phase diagram, and degree of hydrogen bond ing were discussed with the transferability of the association constan t between the model compound and the polymer blends. All the predicted results coincided with the actual hydrogen bonding, regular photograp h, and proton spin-lattice relaxation in the rotating name (T-1 rho(H) ). This model provides a reasonable explanation of analogues of phenol ic resin blends. The predicted thermodynamic properties are in harmony with the experimental results due to the high hydroxyl group density and low molecular weight of the phenolic resin which improves the comp ositional homogeneity of the phenolic/polyester blend.