文献类型：期刊文献

英文题名：Isothermal crystallization kinetics of poly(butylene terephthalate-co- sebacate) copolymer

作者：Zeng, Zuoxiang[1]; Zhang, Hailing[1]; Xue, Weilan[1]; Zhu, Wanyu[2]; Xiao, Xiaoling[1]; Sun, Yu[1]; Li, Zhelong[2]

机构：[1] Department of Chemical Engineering, Institute of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; [2] Shanghai Tianyang Hotmelt Adhesives Co. Ltd, 201802 Shanghai, China

年份：2011

卷号：121

期号：2

起止页码：735

外文期刊名：Journal of Applied Polymer Science

收录：EI(收录号：20111513901559)

语种：英文

外文关键词：Melting - Activation energy - Isotherms - Polybutadienes - Butenes - Kinetics - Crystallization kinetics

摘要：Poly(butylene terephalate) (PBT) and poly(butylene terephthalate-co- sebacate) (PBTS) copolymers containing 5 mol % and 10 mol % sebacate components (Mn = 12,700-14,600) were synthesized by polycondensation. The isothermal crystallization kinetics and melting behaviors after isothermal crystallization of the polymers were investigated by differential scanning calorimetry (DSC). The equilibrium melting temperatures of the polymers were determined by Hoffman-Weeks equation. Analysis of the crystallization kinetic data using the Avrami equation showed that the introduction of sebacate enhanced the crystallization of PBT in PBTS. And the Avrami exponent n varies in the range of 2.16-3.68, indicating that the isothermal crystallization follows two- and three-dimensional growth mechanism. The isothermal crystallization activation energies of the polymers were also calculated by the Arrhenius equation. ? 2011 Wiley Periodicals, Inc.