Melt rheology of compatible binary blends: Poly(ethylene oxide)‐poly(methyl methacrylate) and poly(ethylene oxide)‐poly(vinyl acetate)

Abstract

Abstract A study of the rheological behaviour of poly(ethylene oxide)‐poly(methyl methacrylate) and poly(ethylene oxide)‐poly(vinyl acetate) compatible blends in the molten state is reported. Zero shear viscosity η 0 and the activation energy for the viscous flow Δ E * were obtained as function of both composition and molar mass of the components. Positive and negative deviations from the additivity rule were observed both in the case of log η 0 and Δ E *.