摘要
以RuO_4为双酚A聚碳酸酯/聚对苯二甲酸乙二酯(PC/PET)共混体系的薰染剂,可成功地用透射电镜观察其微观形态和相结构。该体系两相微观结构受原料分子量、组成和溶剂的影响。
RuO4 can stain both saturated and unsaturated polymer systems that contain in their unit structure ether, alcohol, aromatic, or amide moieties. Blends of poly(ethylene terephthalate and poly (bisphenol-A carbonate) were prepared from two different solvents; a mixed solvent of tetra-ehloroethane and phenol (TCE/Ph) in a 50/50 ration by weight, and a mixed solvent of o-chlorophe-nol and chloroform. The morphologies of blends were characterized by TEM. In the absence of trans-esterification, blends were found to be partially miscible. Blends containing greater than 70% PC have a compatibility greater in the PET-rich composition than in the PC-rich composition. The observations revealed that the phase strucure of this system is highly sensitive to the molecular weight of PC, the composition of the blends and solvent of the blends.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第2期275-278,共4页
Chemical Journal of Chinese Universities
