The effect of shear How on the miscibility behaviour of polymer blends
has been investigated for three model systems. Shear has been applied
by confining a polymer sample between two parallel glass plates, the
bottom one remaining stationary while the top one rotates at a constan
t angular speed. The effect of flow has been investigated as a functio
n of temperature. composition, shear rate and molecular weight. Blend
miscibility was followed by light scattering and by differential scann
ing calorimetry.