Hydrogen bonding interaction and miscibilization of ternary blends of poly(2-vinylpyridine), poly(N-vinyl-2-pyrrolidone), and 4,4′-( 1,4-phenylenediisopropylidene)bisphenol

Abstract

The investigation of the hydrogen bonding interaction and miscibility of ternary blends of poly(2-vinylpyridine) (P2VPy), poly(N-vinyl-2-pyrrolidone) (PVP), and 4,4′-(1,4-phenylenediisorpopylidene)bisphenol (PDIPBP), was discussed. The interation energy densities of P2VPy, PVP, and PDIPBP blend were determined using melting point dispersion method. It was shown that the interaction between PVP and PDIPBP is stronger than that between P2VPy and PDIPBP. The free energy of mixing PDIPBP were evidenced by FTIR study. The critical miscibilization content of PDIPBP obtained from spinodal phase boundary calculation is lower than the saturation content, due to which there is enough PDIPBP in the amorphous phase to miscibilize P2VPy and PVP.