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Kinetics and modeling of melt polycondensation reaction for synthesis of poly(butylene succinate-co-butylene terephthalate) I. Esterification
作者:Lixia hu, Linbo Wu*, Fangchao Song, Bo-Geng Li*
關鍵字:biodegradable,polyesters,esterification,kinetics,modeling
論文來源:期刊
具體來源:Macromol Reaction Eng
發表時間:2010年

PBST is an important biodegradable aliphatic-aromatic copolyester. Its synthesis and properties have been intensively studied, but no report deals with its polymerization kinetics and modeling up to now. As the first part of a series of studies on PBST, the kinetics of the TBT-catalyzed homogeneous SA/BDO and heterogeneous TPA/BDO esterifications were investigated experimentally and theoretically in this article. A unified kinetic model considering two main esterifications as well as one reversible polycondensation and two THF-forming side reactions has been developed for the two esterification systems. The model fits well with the experimental results. The effects of reaction temperature, diol/diacid ratio, catalyst amount and heterogeneity on the esterification kinetics are simulated and discussed.

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