用DSC研究了外加官能团化聚烯烃(FPP)、接枝单体和原位形成FPP改性Mg(OH)2/聚丙烯中的异相成核作用.Mg(OH)2表面的异相成核作用使聚丙烯(PP)结晶温度提高;外加FPP使PP结晶温度进一步提高,接枝单体加入也使复合材料中PP结晶温度提高,但原位形成FPP使PP结晶温度、熔点和结晶度降低.认为在改性复合材料中存在Mg(OH)2表面异相成核作用和FPP活化Mg(OH)2表面异相成核的协同作用.
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