Biobased polyesters with composition-dependent thermomechanical properties: synthesis and characterization of poly(butylene succinate-co-butylene azelate).
Environmentally friendly poly(butylenesuccinate-co-butyleneazelate) (P(BS-co-BAz)s) aliphatic copolyesters with composition-dependent thermomechanical properties were synthesized from succinic acid (SuA), 1,4-butanediol (BDO), and dimethylazelate (DMAz) through a two-step polycondensation reaction. The molar SuA/AzA ratio was varied from 4:1 to 1:4, and the chemical structure and molecular characteristics of resulting (co)polyesters were characterized by NMR and SEC, whereas thermal properties and crystallinity were studied by differential scanning calorimetry (DSC), dynamic mechanical thermal analyses (DMTA), and X-ray diffraction (XRD). A good agreement between theoretical and experimental SuA/AzA molar ratios in the copolyesters was achieved, together with the recovery of semicrystalline random copolymers of uniform composition along the chains. NMR, DSC, DMTA, and XRD results show that depending on their composition the P(BS-co-BAz) copolyesters might find applications from elastomers to high-impact thermoplastics.
Laboratory of Polymeric and Composite Materials, Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons (UMONS), Place du Parc 20, 7000 Mons, Belgium.
Rosica
R
Mincheva
Adrien
A
Delangre
Jean-Marie
JM
Raquez
Ramani
R
Narayan
Philippe
P
Dubois
D001672:Biocompatible Materials / Q000138:chemical synthesis*; D002072:Butylene Glycols / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D009682:Magnetic Resonance Spectroscopy; D011091:Polyesters / Q000138:chemical synthesis*; D011108:Polymers / Q000737:chemistry*; D014961:X-Ray Diffraction
D001672:Biocompatible Materials; D002072:Butylene Glycols; D011091:Polyesters; D011108:Polymers; C089797:bionole; C039681:1,4-butanediol