Structure, thermal and mechanical properties of copoly(ester amide)s based on 2,5?furandicarboxylic acid

Abstract In this work, new bio-based copoly(ester amide)s were synthesized by a two-step melt polycondensation process, using 2,5-furanedicarboxylic acid dimethyl ester (DMFDC), 1,3-propanediol (PDO), and 1,3-diaminopropane (DAP), with different DAP content. The chemical structure of the obtained poly(trimethylene 2,5-furandicarboxylate)-co-poly(propylene furanamide) (PTF-co-PPAF) copolymers was confirmed nuclear magnetic resonance ( 1 H NMR) Fourier-transform infrared (FTIR) spectroscopy. Gas chromatography/mass spectrometry used to provide more details process. Thermal properties materials characterized means differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), dynamic–mechanical thermal (DMTA). amorphous their glass transition temperature increased increase in poly(propylene (PPAF) PTF-co-PPAF exhibited improved thermo-oxidative stability up 300 °C. addition, from performed mechanical tests, it found that along PPAF content, Young's modulus increased, while at same time, value elongation break decreased. Graphical