TENSILE, STRESS-STRAIN AND CREEP RUPTURE PROPERTIES OF POLY(VINYL CHLORIDE)/POLY(NEOPENTYL GLYCOL ADIPATE)/POLY(VINYLIDENE FLUORIDE) BLENDS.

Abstract

Poly(vinyl chloride), PVC, and poly(vinylidene fluoride), PVDF, are incompatible polymers. Poly(neopentyl glycol adipate), PDPA, is miscible with both PVC and PVDF. With PDPA acting as a compatibilizer between PVC and PVDF, compatible PVC/PDPA/PVDF blends can be formed at PVDF content of about less than 50 wt percent. Above 50 wt percent PVDF the ternary blends exist in two phases exhibiting two glass transition temperatures, T//g. PVC is the main contributor to the mechanical strength while PDPA and PVDF contribute to the elastic properties of these blends. A compatible blend of 55/22. 5/22. 5 wt percent PVC/PDPA/PVDF exhibiting one single T//g appears to show an interesting balance of the properties of the blend components.