Abstract
Crystallization process of polyethyleneoxide (PEO)/polymethylmethacrylate (PMMA) blends were investigated by differential scanning calorimetry (DSC) in order to investigate molecular weight dependences. The crystallization rate depended on the molecular weight of PMMA, MwPMMA, and became slow with increasing MwPMMA. However, the crystallization rate was independent of molecular weight of PEO, MwPEO. As for the activation energy for formation of secondary nucleus, it was unchanged by blending PMMA.