悬浮法制得PP-g-HEMA结晶性能的研究  

INVESTIGATION ON CRYSTAL PROPERTIES OF PP g HEMA PREPARED BY SUSPENSION GRAFT COPOLYMERIZATION

作　　者：徐春[1] 吴靖[1] 周达飞[1] 

机构地区：[1]华东理工大学材料科学研究所

出　　处：《高分子材料科学与工程》1999年第1期121-124,共4页Polymer Materials Science & Engineering

摘　　要：由悬浮法制得聚丙烯接枝甲基丙烯酸β羟乙酯（ＨＥＭＡ），用示差扫描量热计（ＤＳＣ）、广角Ｘ射线衍射（ＷＡＸＤ）、结晶速率仪、偏光显微镜对接枝物的结晶性能进行了定性、定量表征，比较了接枝前后聚合物结晶形态的变化。PP g HEMA was prepared utilizing the technique of suspension graft copolymerization. The crystal properties of the grafted copolymer were studied by DSC, WAXD, crystal growth speedometer and crossed polarizing microscope. The crystal morphology of grafted and pure PP was compared. The graft reaction take place mainly in the amorphous area of PP crystal. The melting temperature of grafted PP is almost the same as that of pure PP. The crystal degree of grafted PP decreases little. The crystal dimension of grafted PP decreases to some extent. It also showed that HEMA which was grafted to PP deterred the growth of PP crystal. The higher the graft degree, the more difficult the spherocrystal formed.

关 键 词：聚丙烯 甲基丙烯酸 羟乙酯 结晶 性能 悬浮聚合 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] O631.13[理学—高分子化学]