the compatibility and crystallization of methyl methacrylate-tetrahydrofuran diblock copolymer/tetrahydrofuran homopolymer blends were studied. We found that some special crystalline morphologies could be formed for the compatible blends due to the ealstence of microphase separation of the copolymer
and that the dissolution of the homopolymer in its corresponding copolymer domain could detendned by the DSC thermograms of the blends.