PET/PTT共聚酯的序列结构  

Sequence Distribution and Structure of PET/PTT Copolyesters

作　　者：崔晶[1] 王朝生[1] 王华平[1] 陈颖 张玉梅[1] 

机构地区：[1]东华大学材料学院纤维材料改性国家重点实验室,上海200051 [2]中国石油辽阳石化分公司,辽宁辽阳111003

出　　处：《合成纤维》2006年第9期1-5,共5页Synthetic Fiber in China

摘　　要：采用TPA生产路线合成一系列PET/PTT共聚物,发现在不改变其他条件的情况下,改变单体配比,所获得的共聚物特性黏度值都在0.6dL/g以上。对共聚物进行核磁共振测试来表征其序列结构,发现1H-NMR和13C-NMR所测试的结论一致,所得共聚酯无规度值均接近1,表明所得共聚酯均接近无规共聚物。The PET/PTT copolycsters with different EG/FDO molar ratios were synmesized by TPA-route. It showcd that the intrinsic viscosities of all the copolyesters made in the similar conditions were more than 0.6 dug. The triad sequence structures of PET/PTT copolyesters were characterized by 13^C-NMR and 1^H-NMR. The sequence distribution from 13^C-NMR was consistent with that from 1^H-NMR. The degree of randomness B of all the copolycsters reached to 1, which indicated the copolyesters were random copolymcrs.

关 键 词：PET/PTT 共聚物 序列结构 核磁共振 无规度 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]