Effect of Variations of Temperatures on the Compatibility of Poly(Methyl Methacrylate)/Polyvinyl Chloride in THF Ternary System

Abstract

The intermolecular interaction between poly (methyl methacrylate)
(PMMA) and polyvinyl chloride (PVC) in THF has been
studied at different temperatures using dilute-solution viscometry
method. The intrinsic viscosity and viscometric interaction parameter
were experimentally measured for the binary (solvent/polymer)
and ternary (solvent (1)/polymer (2)/polymer (3) systems. These
results have served for the estimation of the compatibility of the
polymer mixture at different temperatures by means of the sign of
Δb_m and  Δ [ η ]_m . The results show that the polymer mixture is compatible
in THF as the temperature increases, while the incompatibility
observed at 34°C may be due to the enhancement in the
interactions between THF and the polymers at this temperature.