摘要
采用直接酯化法合成了一系列含间苯二甲酸的PEIT -PEG嵌段共聚酯 ,研究了聚合时间、聚合效率及聚酯的特性粘度与产物中间苯二甲酸含量及共聚酯分子量的关系 。
A series of block copolyesters based on poly(ethylene terephthalate co isophthalate) poly(ethylene glycol)(PEIT PEG)was prepared by direct esterification poly condensation process. The effects of components together with their molecular weight and contents on copolymerization time, copolymerization efficient and the intrinsic viscosity of the block copolyesters were discussed, by which the spinning grade molecular weight and contents of PEG were concluded.
出处
《功能高分子学报》
CAS
CSCD
2001年第3期288-293,共6页
Journal of Functional Polymers