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采用差示扫描量热仪、偏光显微镜、动态热机械性能测试仪和广角X射线衍射仪等,对不同组成的iPP/PPOc共混物的相容性和结晶行为进行了深入的研究.结果表明,IPP/PPOc共混物在整个组成范围内均出现一个玻璃化转变温度,说明在无定形区iPP和PPOc具有较好的相容性,而玻璃化转变温度随着PPOc含量的增加呈下降趋势;此外,随着PPOc含量的增加,共混物的熔点、结晶温度、球晶尺寸和球晶的完善程度均呈下降趋势,而不影响共混物的晶型;iPP/PPOc共混物在其整个组成范围内都只出现1个熔融峰和1个结晶峰,说明在晶区产生了共晶现象.

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