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Bio-Based Aromatic Copoly(Ether Ester)s with Enhanced Toughness and Degradability: Influence of Insertion of Phenoxy-Ether Linkage and Eugenol-Derived Composition on Properties
Bio-Based Aromatic Copoly(Ether Ester)s with Enhanced Toughness and Degradability: Influence of Insertion of Phenoxy-Ether Linkage and Eugenol-Derived Composition on Properties
Two series of renewable nipagin and eugenolbased copoly(ether ester)s, PDN11-xE1x and PDN11-xE2x (x = 0%, 10%, 20%, 30%, 40%, 50%), were prepared in the melt with 1,10-decanediol as a comonomer. The synthesized poly(ether ester)s have weight-average molecular weights (Mw) in the range of 20,400–37,200 g mol-1, and dispersity (D) values between 1.7 and 1.9. Thermal gravimetric analysis (TGA) reveal that all the poly(ether ester)s exhibit a two-step degradation mechanism with an initial degradation temperature above 350 oC. Results from differential scanning calorimetric (DSC) and wide-angle X-ray diffraction (WXRD) analyses demonstrate that the poly(ether ester)s are all semicrystalline materials with glass transition temperature (Tg) values ranging between 221.3 and 28.3 oC. The insertions of phenoxy-ether linkage and eugenol-derived composition have significant influence on the Tg, crystallinity, Young’s modulus, and tensile strength, aswell as the toughening effect and degradability.
