Influences of Acrylonitrile (AN) Content in Styrene-Acrylonitrile (SAN) Copolymer on the Mechanical Property, Thermo-deformation Resistance, and Morphology of PVC-ASA-DOP Blends

摘要

In this work, PVC-ASA-DOP blends were prepared by melt blending ASA (acrylate-styrene-acrylonitrile) graft copolymer, poly(vinyl chloride) (PVC) resin with dioctyl phthalate (DOP). The effects of AN content on the property of the blends were investigated. The results showed that the mechanical property depended on AN content in the SAN copolymer, and PVC was immiscible with the SAN copolymer over the entire AN composition range. Thermo-deformation resistance was dependent on T_g and the storage modulus. From SEM, it was found that the morphology was consistent with the property.