Abstract
ABSTRACTA series of poly(propylene‐co‐1,4‐cyclohexanedimethylene 2,5‐furandicarboxylate)s (PPCFs) with different compositions were synthesized from bio‐based aromatic monomer 2,5‐furandicarboxylic acid and 1,3‐propanediol (PDO), along with 1,4‐cyclohexanedimethylene (CHDM). The chemical structure, composition, and sequence distribution of PPCFs were determined by nuclear magnetic resonance (1H NMR and 13C NMR). Results showed that the compositions of copolyesters depended on the feed molar ratio of PDO and CHDM, and all the obtained PPCFs copolyesters had triad component in a random sequential structure. With the addition of CHDM, the gas barrier properties of poly(propylene 2,5‐furandicarboxylate) (PPF) deteriorated. However, when the content of CHDM reached 79%, PPCF79 still showed the CO2 and O2 barrier improvement factor of 4.5 and 3.25, respectively, which were better than those of poly(ethylene naphthalate), a well‐known polymer with barrier property. Besides, PPCF79 showed good performance on tensile modulus, tensile strength, elongation at break, and the crystallization enthalpy was improved from 3.2 J g−1 for PPF to 30.7 J g−1 for PPCF79. It has the potential to serve as a promising bio‐based polymer with excellent comprehensive performance. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47291.
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