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Relationship between the structure and the physical properties of polymers based on furandicarboxylic acid obtained from biomass

Abstract : This work explored for the first time some physical properties of a new generation of copolyesters obtained from physical mixtures of two isomers: 2,5-furandicarboxylic acid (2,5-FDCA) and 2,4-furandicarboxylic acid (2,4-FDCA). The 2,5-FDCA isomer is the most studied today because it is used to obtain Poly (Ethylene-2,5-Furanoate) (2,5-PEF), which is the best bio-based candidate to replace the giant of the plastic industry, Poly (Ethylene-Terephthalate) (PET). The 2,4-FDCA isomer has also been studied because it can be used to obtain Poly (Ethylene-2,4-Furanoate) (2,4-PEF), with an extremely slow kinetics of crystallization. It has been shown that the combination of these two isomers allows to obtain copolymers with adjusted and controlled properties. The dynamics of molecular relaxation in the amorphous phase, both localized and cooperative, have been studied over a wide range of frequencies and temperatures, according to approaches typically used to study glass-forming liquids. Then, the investigation was directed towards the influence of the position of the carbonyl group on the furan ring on the ability to crystallize and the kinetics of crystallization. Several experimental techniques have been used: differential scanning calorimetry (DSC), modulate-temperature differential scanning calorimetry (MT-DSC), dielectric relaxation spectroscopy (DRS) and measurement of thermos-stimulated depolarization currents (TSDC).
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Submitted on : Wednesday, October 13, 2021 - 3:21:14 PM
Last modification on : Wednesday, November 3, 2021 - 6:36:02 AM

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  • HAL Id : tel-03376525, version 1

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Aurelie Bourdet. Relationship between the structure and the physical properties of polymers based on furandicarboxylic acid obtained from biomass. Materials Science [cond-mat.mtrl-sci]. Normandie Université; Esposito, 2020. English. ⟨NNT : 2020NORMR113⟩. ⟨tel-03376525⟩

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