Synthesis and properties of poly(ethylene‐co‐diethylene glycol 2,5‐furandicarboxylate) copolymers

Poly(ethylene 2,5‐furandicarboxylate) (PEF) is a biobased polyester with high gas barrier properties, tensile modulus, and strength. In PEF chain, in addition to ethylene furandicarboxylate repeat unit, there is also a small amount of diethylene glycol furandicarboxylate (DF) unit which is formed by...

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Bibliographic Details
Published in:Journal of applied polymer science 2022-04, Vol.139 (15), p.n/a
Main Authors: Meng, Hongxu, Li, Zhisong, Wu, Linbo, Li, Bo‐Geng, Hu, Yumiao, Wang, Kecheng
Format: Article
Language:English
Subjects:
Antifreeze solutions
biobased polyester
Composition
Copolymers
Ethylene glycol
gas barrier material
Glass transition temperature
Impact analysis
Materials science
Modulus of elasticity
NMR
Nuclear magnetic resonance
Penetration tests
poly(ethylene 2,5‐furandicarboxylate)
poly(ethylene‐co‐diethylene glycol 2,5‐furandicarboxylate)
polyether esters
Polyethylene terephthalate
Polymers
Thermogravimetric analysis
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Summary:Poly(ethylene 2,5‐furandicarboxylate) (PEF) is a biobased polyester with high gas barrier properties, tensile modulus, and strength. In PEF chain, in addition to ethylene furandicarboxylate repeat unit, there is also a small amount of diethylene glycol furandicarboxylate (DF) unit which is formed by etherification side reactions. However, the effect of DF unit in a wide composition range on polymer properties is still unclear. In this study, random poly(ethylene‐co‐diethylene glycol 2,5‐furandicarboxylate) (PEDF) copolymers were synthesized via melt copolycondensation of 2,5‐furandicarboxylic acid, ethylene glycol and diethylene glycol. The copolymers were characterized and evaluated by intrinsic viscosity, 1H NMR, thermal transition, thermogravimetric analysis, tensile, impact, and O2 penetration tests. The copolymers are amorphous in the full composition range. The presence of less than 58 mol% DF unit in PEDFs neither improves the tensile ductility nor deteriorates the oxygen barrier performance, but reduces the glass transition temperature clearly. In comparison with poly(ethylene terephthalate), the PEDF copolymers containing
ISSN:0021-8995
1097-4628
DOI:10.1002/app.51921