摘要
溶剂诱导结晶的结构形态与热结晶的有很大差别.本文应用偏光显微镜,小角激光光散射,电子扫描显微镜,进一步研究了形态及其形成,证明球形堆砌状结构仅在表层形成.在断面能观察到三层的结构形态和溶剂扩散前沿,并据此测定了溶剂扩散动力学,表明符合Fick方程,溶剂在表层和内部扩散过程不同,是表里形态结构各异的原因.
The morphology of quenched poly(ethylene terephthalate) 'PET' films crystallized by several kinds of organic solvents or it's saturated vapors axe studied by tre SEM, SALS and PLM. It has been shown that the spherulite ball like structure is formed only in the surface-layer, and the structure of fracture can be divided into three layers according to difference of morphology. Depth of diffusion (A) dependson the time of solvent treatment (t). The plot of h vs t1/2 is linear.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1993年第2期195-200,共6页
Acta Polymerica Sinica
关键词
溶剂
诱导结晶
结构
PET
Poly(ethylene terephthalate), Solvent induced crystallization , Surface morphology, Fracture morphology
