A COMPARISON OF PVC/PLASTICIZER INTERACTION PARAMETER AND PLASTISOL PROCESSING CHARACTERISTICS WITH HIGH SOLVATING PLASTICIZERS AND PLASICIZER BLENDS

摘要

There has been an increased need for PVC formulators to find substitutes for phthalate type plasticizers without sacrificing compatibility, processing properties, and performance. This work compares the Flory-Huggins interaction parameter (χ), a theoretical test for compatibility, to plastisol compatibility through an examination of roll compatibility, gel/fusion temperatures, and viscosity aging stability of new high solvating plasticizers and blends with general purpose type plasticizers. Results show that by blending plasticizers with low compatibility with high solvating plasticizers compatibility and processing characteristics can be improved, providing a viable substitute for traditional general purpose phthalate plasticizers.