Abstract
A simulation method, which predicts the viscoelastic properties of polydisperse polymer melts from a relaxation spectrum, is applied to blend systems. From theoretical considerations of the molecular weight distribution curve, the molecular weight distribution curve of blends can be treated as a polydisperse polymer melt. From this knowledge, weight averaged molecular weight and polydispersity were calculated, the relaxation spectrum was predicted and the viscoelastic properties were calculated from this relaxation spectrum. Good agreement was found between measured and predicted viscoelastic properties in a wide frequency region.
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