制备了反应性单体(St、AA)改性PP/PS共混物,用TEM、SEM、POM和DMA研究了改性对PP/PS共混物的相结构与动态力学性能的影响.结果表明,反应单体存在异相成核作用与增容作用,并促进PS在PP中的分散,分散相粒子尺寸和PP球晶尺寸明显变小,AA的异相成核作用比St的大.反应性单体改性提高共混物的储存和损耗模量,AA单体改性共混物的储存模量(E')和损耗能量(E")比St改性的高.
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