聚氧乙烯超薄膜等温结晶过程的研究  

Investigation on Isothermal Crystallization Process of PEO Ultrathin Film

作　　者：迟长龙[1] 于翔[1] 宋鹏飞[1] 王玉周[1] 

机构地区：[1]河南工程学院材料与化学工程学院,河南郑州450000

出　　处：《塑料科技》2014年第3期47-50,共4页Plastics Science and Technology

摘　　要：利用原子力显微镜(AFM)研究了不同温度的聚氧乙烯(PEO)超薄膜等温结晶过程。结果表明:超薄膜晶体形貌具有生长控制因素的依赖性;当晶体生长同时受到表面成核和熔体扩散控制时,各方向生长速率明显不同,且在晶体形成过程中,先发生液相-固相转变,后发生固相-固相转变。The crystallization process of poly（ethylene oxide） （PEO） ultrathin film were investigated by atomic force microscope （AFM） at different isothermal crystallization temperature （To）. The results show that： the morphologies of PEO ultrathin film lamellae are dependent on the controlling factors of crystal growth process, diffusion and nucleation. When the ultrathin film lamellae growth process is limited by diffusion and nucleation, the growth rates are not equal at different orientation. At the process of crystallization, the liquid-solid phase transition takes place at first, and then the solid-solid phase transition appears.

关 键 词：聚氯乙烯 原子力显微镜 超薄膜 形貌 

分 类 号：TQ320.721[化学工程—合成树脂塑料工业]