The Effect of Molecular Weight on the (Re)-Processability and Material Properties of Bio-Based, Thermoreversibly Cross-Linked Polyesters

A (partially) bio-based short-chain polyester is prepared through interfacial polycondensation of furan-functionalized diphenolic acid with terephthalic chloride. The furan groups along the backbone of the obtained polyester are able to form a covalent network (PE-fur/Bism) with various ratios of 1,...

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Bibliographic Details
Published in:Applied sciences 2022-07, Vol.12 (14), p.7287
Main Authors: Beljaars, Martijn, Kamphuis, Arjen J., Heeres, Hero J., Broekhuis, Antonius A., Picchioni, Francesco
Format: Article
Language:English
Subjects:
Acids
bio-based
bismaleimide
Bismaleimides
Bisphenol A
Bond strength
Calorimetry
Chemistry
Chloride
Diels-Alder reactions
Differential scanning calorimetry
furan
Glass transition temperature
Liquid chromatography
Material properties
Mechanical properties
Molecular weight
NMR
Nuclear magnetic resonance
Phenols
polyester
Polyester resins
Polyesters
Polymer melts
Polymers
Recyclability
Resins
short-chain
Thermal analysis
Thermogravimetric analysis
Transition temperatures
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Summary:A (partially) bio-based short-chain polyester is prepared through interfacial polycondensation of furan-functionalized diphenolic acid with terephthalic chloride. The furan groups along the backbone of the obtained polyester are able to form a covalent network (PE-fur/Bism) with various ratios of 1,1′-(methylenedi-4,1-phenylene)bismaleimide via the thermoreversible Diels–Alder (DA) reaction. Several techniques have been employed to characterize the polyester network, including 1H-NMR, gel permeation chromatography (GPC), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and dynamic mechanical thermal analysis (DMTA). The polyester base polymer displays a glass transition temperature of 115 °C, whereas the temperatures at which the retro-Diels–Alder (rDA) reaction takes place lie above 130 °C for the various polyester/bismaleimide networks. Excellent thermoreversibility and recyclability of the polyester resin have been shown through DSC and DMTA measurements.
ISSN:2076-3417
2076-3417
DOI:10.3390/app12147287