反应性单体改性PP/PS共混物结晶与熔融行为

Crystallization and Melt Behavior of PP/PS Blends Modified by Grafted PP and Reactive Monomer

摘要: 制备了三种反应性单体和两种PP接枝物改性的PP／PS共混物，用DSC研究了改性PP／PS共混物的结晶与熔融行为。结果表明：PS的加入提高了PP的结晶温度，两种接枝物的加入进一步提高共混物中PP的结晶温度，少量反应性单体对结晶温度影响不大，但高用量时则明显提高共混物的结晶温度；外加接枝物或者反应性单体对共混物中PP的熔融温度影响不大，但是熔融峰形与结晶温度高低有关。

Abstract: PP/PS blends modified by grafted PP and reactive monomer were prepared by twin screw extruder. The crystallization and melt behavior of modified blends were investigated by DSC. Three reactive monomers, AA- g-PP and MA- g -PP were used as modifying agent.