Multiple Melting Endotherms of Syndiotactic Polystyrene in β Crystalline Form  

作　　者：Zhen Hua YUAN De Yan SHEN (Polymer Physics Laboratory, Center for Molecular Science. Institute of Chemistry. Chinese Academy of Sciences, Beijing 100080) 

出　　处：《Chinese Chemical Letters》2000年第4期367-368,共2页中国化学快报（英文版）

摘　　要：A series of syndiotactic polystyrene (SPS) samples in β crystalline form were prepared by cooling from the melt at various cooling rates. The effects of cooling rate from the melt, and DSC heating rate on the multiple melting behaviors of β crystals were investigated by differential scanning calorimetry (DSC) and modulated differential scanning calorimetry (MDSC), from which the nature.of the multiple melting behavior was ascribed to the occurring of a recrystallization process.A series of syndiotactic polystyrene (SPS) samples in β crystalline form were prepared by cooling from the melt at various cooling rates. The effects of cooling rate from the melt, and DSC heating rate on the multiple melting behaviors of β crystals were investigated by differential scanning calorimetry (DSC) and modulated differential scanning calorimetry (MDSC), from which the nature.of the multiple melting behavior was ascribed to the occurring of a recrystallization process.

关 键 词：Multiple melting behavior syndiotactic polystyrene recrystalliation. 

分 类 号：TQ325[化学工程—合成树脂塑料工业]