摘要
用广角X射线衍射法(WAXD)、差示扫描量热法(DSC)以及红外光谱法(IR)等方法证明了在聚对苯二甲酸丁二酯(PBT)/聚对苯二甲酸乙二酯(PET)共混体系中两组分是晶相分离的,而不生成混晶。动态力学分析结果表明,PBT、PET两组分晶区之间的无定型部分仍具有相容性,共混体系的形态结构因组分比不同而变化。长周期L、无定形区厚度A以及晶区厚度C均随PBT含量的增加而减小。结晶温度升高,有利于晶区厚度增大。
A lot of method, such as : DSC, WAXD,IR, SAXS, DMA, etc. have been utilized to determine the miscibility and morphology of PBT/PET blends. The results indicated that PBT and PET crystallized according to their own cell unit, amorphous phase between crystallization phase are miscible. The morphology of the blends changes with compositions. Long spacing, crystallize core thickness and amorphous thickness decrease with increasing PBT. Crystallize core thickness will increase at higher temperatures.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1998年第3期51-54,58,共5页
Polymer Materials Science & Engineering
关键词
共混
结晶
相容性
形态结构
PET
PBT
PBT/PET, blending, crystallization, miscibility, seperated crystallization phase, morphology