Abstract
Poly(ether ester)s (PEEs) represent a promising class of segmented co-polymers, nevertheless the synthesis of PEEs based on renewable 2,5-furandicarboxylic acid (FDCA) is still scarce. In this context, a series of poly(1,4-butylene 2,5-furandicarboxylate)-co-poly(poly(propylene oxide) 2,5-furandicarboxylate) co-polyesters with different composition of stiff poly(1,4-butylene 2,5-furandicarboxylate) (PBF) and soft poly(poly(propylene oxide) 2,5-furandicarboxylate) (PPOF) moieties were synthesized, via a two-step bulk polytransesterification reaction. The molar ratio of PBF/PPOF incorporated was varied (10 to 50 mol%) in order to prepare several novel materials with tuned properties. The materials were characterised in detail through several techniques, namely ATR FTIR, 1H and 13C NMR, TGA, DSC, DMTA and XRD. Their hydrolytic and enzymatic degradation evaluation was also assessed. These new co-polymers showed either a semi-crystalline nature when higher PBF/PPOF ratios were used, and for approximately equal amounts of PBF and PPOF an amorphous co-polyester was obtained instead.
Highlights
The massive consumption of fossil-based polymers used on a variety of commodity objects of daily life has prompted, in the last decades, the development of renewable-based alternatives with emphasis on their sustainability
furandicarboxylic acid (FDCA) is a renewable-based aromatic building block monomer that has been widely explored as precursor of several homopolyesters, with very similar properties to those of their non-renewable counterparts, namely terephthalic acid-derivatives (TPA) [1,2]
Some examples of polyesters synthesized from FDCA are poly(ethylene 2,5-furandicarboxylate)
Summary
The massive consumption of fossil-based polymers used on a variety of commodity objects of daily life has prompted, in the last decades, the development of renewable-based alternatives with emphasis on their sustainability. Among the renewable-based polymers, polyesters derived from. FDCA is a renewable-based aromatic building block monomer that has been widely explored as precursor of several homopolyesters, with very similar properties to those of their non-renewable counterparts, namely terephthalic acid-derivatives (TPA) [1,2]. Some examples of polyesters synthesized from FDCA are poly(ethylene 2,5-furandicarboxylate). (PEF) [3] and poly(1,4-butylene 2,5-furandicarboxylate) (PBF), among others, with similar properties to those of their TPA counterparts [4,5,6,7,8,9,10,11] or even enhanced properties such as for example barrier properties or degradability under enzymatic conditions [12,13]. The ensuing materials presented even higher Tg s than those of their corresponding homopolyesters synthesized with linear diols with the same number of carbon atoms
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