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动态力学谱研究表明熔融共混PVA/PEO体系的无定形态中存在着纯PEO及PVA/PEO的相容或部分相容相。相容或部分相容相的T_g随共混物组成的变化远高于按照FOX方程的计算值。用结晶和分子间相互作用解释了这种对FOX方程的偏离。应用FTIR差示光谱技术对PVA/PEO共混物和PVA/DGDE浓溶液的研究证实了PVA分子链上酯基和PEO分子链存在着强的相互作用。
Dynamic mechanical spectroscopy studies show that there is a compatible or partially compatible phase of pure PEO and PVA / PEO in the amorphous state of the melt-blended PVA / PEO system. The T_g of the compatible or partially compatible phase varies much more with the composition of the blend than calculated according to the FOX equation. This deviation from the FOX equation is explained by the crystal and intermolecular interactions. The study of PVA / PEO blend and concentrated solution of PVA / DGDE by FTIR differential spectroscopy confirmed the strong interaction between ester groups and PEO molecular chains on PVA molecular chain.