高压结晶PET/PC共混体系中生长在伸直链晶体内部球晶形态的观察  

Observation of Novel Spherulitic Morphology Formed in Extended-chain Crystals in High-pressure Crystallized PET/PC Blends

作　　者：吕军[1] 魏刚[2] 黄锐[1] 李良彬[1] 

机构地区：[1]四川大学高分子科学与工程学院,成都610065 [2]西华大学材料科学与工程学院,成都610039

出　　处：《高等学校化学学报》2005年第12期2391-2393,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:29434010;59473002)资助

摘　　要：High-pressure crystallization behavior of poly(ethylene terephthalate)(PET)/biphenol-A polycarbonate(PC) blends were investigated by scanning electron microscopy(SEM) and atomic force microscopy(AFM).Two novel spherulitic structures,i.e.bamboo-shoot-like spherulite and brain-like spherulite,were observed in the polyester extended-chain crystals.The extended-chain lamellar crystal may be the substructure of these spherulites.This morphology,which is quite different from that of usual spherulite and extended-chain crystal,may promote the understanding of formation process and mechanism for both polymer spherulites and extended-chain crystals.High-pressure crystallization behavior of poly （ethylene terephthalate） （PET）/biphenol-A polycarbonate（PC） blends were investigated by scanning electron microscopy （SEM） and atomic force microscopy （AFM）. Two novel spherulitic structures, i.e. bamboo-shoot-like spherulite and brain-like spherulite, were observed in the polyester extended-chain crystals. The extended-chain lamellar crystal may be the Substructure of these spherulites. This morphology, which is quite different from that of usual spherulite and extended-chain crystal, may promote the understanding of formation process and mechanism for both polymer spherulites and extended-chain crystals.

关 键 词：PET/PC共混物 高压结晶 结晶形态 

分 类 号：O631[理学—高分子化学]