Synthesis, characterization and thermal, hydrolytic and oxidative degradation study of biobased (BisFuranic-Pyridinic) copolyesters

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• 作者：A. Bougarech^a ; ^b ; M. Abid^a ; ; S. Abid^a ; E. Fleury^b ; ^{etienne.fleury@insa-lyon.fr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Polycondensation ; Bio-based polymer ; Furanic ; Pyridinic ; Hydrolytic degradation
• 刊名：Polymer Degradation and Stability
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：133
• 期：Complete
• 页码：283-292
• 全文大小：1554 K

文摘

Polymers from renewable resources are of high interest since it could be possible to valorize the biomass and in parallel to tune their macromolecular structures in relation with their properties. Here novel bisfuranic-pyridinic copolyesters, namely poly (ethylene furoate-co-ethylene pyridinate) (PEBF-co-PEPy) were prepared by applying a two-stage melt polycondensation method at high temperature, in a presence of titanium derivatives as catalyst. Molecular weights of resulting copolyesters are in the range 24000–45200 g mol⁻¹ and their chemical microstructures statistical as shown by NMR. These furano-pyridinic copolyesters are amorphous with Tg ranging from 62 to 67 °C and their thermal and hydrolysis stabilities are influenced by presence of the pyridinic dyads Py-ED-Py. Finally the oxidative degradation in H₂O₂/CoCl₂ cannot be effective because of the chelating properties of pyridinic moieties.