作者：Xie Hongzhou; Wu Linbo; Li Bo-Geng; Dubois Philippe.
关键字：Biobased polymers, high performance polymers, polyesters, furandicarboxylic acid, mechanical properties
论文来源：期刊
具体来源：Ind Eng Chem Res. 2018, 57, 13094?13102, DOI：http://dx.doi.org/10.1021/acs.iecr.8b03204
发表时间：2018年

Poly(ethylene-co-hexamethylene 2,5-furandicarboxylate) (PEHF) copolyesters with high intrinsic viscosity were synthesized from 2,5-furandicarboxylic acid (FDCA), ethylene glycol (EG), and 1.6-hexanediol (HDO) through two-step melting polycondensation, characterized

with 1H NMR, DSC, WAXD, and TGA, and assessed by tensile and impact tests. The molar fraction of HF unit in PEHF (?HF), namely, copolymer composition, is higher than the molar fraction of HDO in the feeding diols and can be predicted empirically via Mayer?Lewis equation with apparent reactivity ratio rHDO = 4.6 and rEG = 0.74. All the PEHFs exhibited a single glass transition temperature and excellent thermal stability. HF-rich (?HF ≥ 88 mol %) PEHFs are semicrystalline but the others are almost amorphous. In comparison with PEF, PEHFs with ?HF of 28?36 mol % possess significantly improved tensile ductility (elongation at break 54?160%) and retain high tensile modulus (2.6?2.2 GPa) and yielding strength (71?65 MPa). The tensile properties are comparable to those of bottle-grade PET.