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 Vol. 12; no. 14; p. 7287
Main Authors: Beljaars, Martijn, Kamphuis, Arjen J., Heeres, Hero J., Broekhuis, Antonius A., Picchioni, Francesco
Format: Journal Article
Language:English
Published: Basel MDPI AG 01.07.2022
Subjects:
Acids
bio-based
bismaleimide
Bisphenol A
Bond strength
Chemistry
Chloride
furan
Mechanical properties
Molecular weight
Phenols
polyester
Polymer melts
polymers
Resins
short-chain
United States > US
ISSN:2076-3417, 2076-3417
Online Access:Get full text
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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.
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content type line 14
ISSN:2076-3417
2076-3417
DOI:10.3390/app12147287