COMPATIBILITY OF BUTYL ACRYLATE-4-VINYL P YRIDINE COPOLYMER WITH POLYVINYL-CHLORIDE

The butylacrylate-4-vinyl pyridine copolymers [P(BAVP)] with different proportions of 4-vinyl pyridine were synthesized by radical polymeriz ation. A series of mixtures with different proportions of P (BAVP) and PVC were prepared by solvent casting from tetrahydrofuran(THF), Then we assessed their compatibility with dynamical measurements, We found that blends were homogeneous, i, e, these copolymers were miscible wit h PVC, as long as the content of vinyl pyridine was more than 1%(molar percent), However, the mixture of polybutyl acrylate (PBA) and PVC wa s inhomogeneous, which means, these two were immiscible. As the conten ts of PVC and vingl pyridine sigments in mixture were increasing, the T-g of P(BAVP)/PVC increased, By analyzing the relevant FTIR spectra, we inferred that the boost of miscibility of P(BAVP) and PVC might due to the fact that the interaction of the P(BAVP) molecules is weaker t han that of PBA.