Bisphenol-A polycarbonate/dioctyl phthalate blend samples crystallized at a hydrostatic pressure were investigated by WAXD,DSC and SEM measurements.Some novel stereo-open spherulitic structures,i.e.,peony-,cabbage-,se...Bisphenol-A polycarbonate/dioctyl phthalate blend samples crystallized at a hydrostatic pressure were investigated by WAXD,DSC and SEM measurements.Some novel stereo-open spherulitic structures,i.e.,peony-,cabbage-,seaweed-,and lotus-like spherulites,were observed which belong to a three-dimensional structure and were only composed of crystalline region.The foleded-chain lamellar crystal was proved to be the sub-structure of these spherulites.This study also suggests a new route to grow such crystals so as to promote the understanding of the formation process and mechanism of polymer spherulites.展开更多
聚碳酸酯(PC)热结晶十分困难,但在某些溶剂诱导作用下,其结晶能力能得到显著提高。且诱导剂的种类、溶度参数和极性等物化性质的不同,其诱导 PC 结晶的能力与形态也不同。从溶剂分子在聚合物内的扩散动力学、诱导结晶行为与特性、诱导...聚碳酸酯(PC)热结晶十分困难,但在某些溶剂诱导作用下,其结晶能力能得到显著提高。且诱导剂的种类、溶度参数和极性等物化性质的不同,其诱导 PC 结晶的能力与形态也不同。从溶剂分子在聚合物内的扩散动力学、诱导结晶行为与特性、诱导结晶形态、诱导结晶机理及应用前景等方面对溶剂诱导 PC 结晶的研究工作和理论进展进行了综述。展开更多
文摘Bisphenol-A polycarbonate/dioctyl phthalate blend samples crystallized at a hydrostatic pressure were investigated by WAXD,DSC and SEM measurements.Some novel stereo-open spherulitic structures,i.e.,peony-,cabbage-,seaweed-,and lotus-like spherulites,were observed which belong to a three-dimensional structure and were only composed of crystalline region.The foleded-chain lamellar crystal was proved to be the sub-structure of these spherulites.This study also suggests a new route to grow such crystals so as to promote the understanding of the formation process and mechanism of polymer spherulites.
文摘聚碳酸酯(PC)热结晶十分困难,但在某些溶剂诱导作用下,其结晶能力能得到显著提高。且诱导剂的种类、溶度参数和极性等物化性质的不同,其诱导 PC 结晶的能力与形态也不同。从溶剂分子在聚合物内的扩散动力学、诱导结晶行为与特性、诱导结晶形态、诱导结晶机理及应用前景等方面对溶剂诱导 PC 结晶的研究工作和理论进展进行了综述。