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Issue 103, 2016
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DBU-catalyzed biobased poly(ethylene 2,5-furandicarboxylate) polyester with rapid melt crystallization: synthesis, crystallization kinetics and melting behavior

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Abstract

Poly(ethylene 2,5-furandicarboxylate) (PEF) is in the spotlight as a new emerging biobased polyester. Usually, PEF exhibits very slow and weak melt crystallization behavior. In this study, PEF synthesis via a transesterification polycondensation method catalyzed by 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as an organic nonmetallic catalyst was attempted. PEF with a moderate molecular weight (intrinsic viscosity 0.54 dL g−1) and low diethylene glycol furandicarboxylate unit content (DEGF 1.7%) was successfully synthesized and the melt crystallization kinetics and melting behavior were investigated. The DBU-catalyzed PEF exhibited rapid melt crystallization in both nonisothermal and isothermal manners. At cooling rate of 10 °C min−1, a melt crystallization peak appeared around 158 °C with a crystallization enthalpy of 29 J g−1. DSC and WAXD results indicated a crystallinity of 27–34% after sufficient isothermal melt crystallization at 160–210 °C. A minimum of melt crystallization half time, 1.6 min, appeared at 160 °C. The equilibrium melting point of PEF was estimated to be 243 °C.

Graphical abstract: DBU-catalyzed biobased poly(ethylene 2,5-furandicarboxylate) polyester with rapid melt crystallization: synthesis, crystallization kinetics and melting behavior

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Publication details

The article was received on 23 Aug 2016, accepted on 19 Oct 2016 and first published on 19 Oct 2016


Article type: Paper
DOI: 10.1039/C6RA21135F
Citation: RSC Adv., 2016,6, 101578-101586
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    DBU-catalyzed biobased poly(ethylene 2,5-furandicarboxylate) polyester with rapid melt crystallization: synthesis, crystallization kinetics and melting behavior

    J. Wu, H. Xie, L. Wu, B. Li and P. Dubois, RSC Adv., 2016, 6, 101578
    DOI: 10.1039/C6RA21135F

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