The Composition Analysis and Sequence Distribution of the Copolymers with Poly (Trimethylene Terephthalate)
A series of poly (ethylene-co-trimethylene terephthalate) (PETT) copolymers and poly (trimethylene-co-butylene terephthalate) (PTBT) copolymers were prepared by polycondensation. The composition and sequence distribution of the copolymers with poly (trimethylene terephthalate) (PTT) were investigated by NMR. The result demonstrates that all of the synthesized copolymers are the block copolymers and the content of PTT units incorporated into the copolymers is always larger than that fed in the polymerization. The higher the content of the component of the copolymers, the longer its sequence length is. To the PETT copolymers, PTT units are more likely to form the alternative segments than PET units. While the PBT units favor a longer sequence length than the PTT units in their corresponding enriched PTBT copolymers.
ZOU Hantao LI Guang JIANG Jianming XU Weilin
College of Textile and Material, Wuhan University of Science and Engineering, Wuhan 430073, P. R. Ch State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University,
国际会议
上海
英文
122-124
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）