Abstract—
A series of new copolyesters of poly(ethylene terephthalate) and 4'-hydroxybiphenyl-4-carboxylic acid copolyesters were synthesized by transesterification in the melt of polyethylene terephthalate with 4'‑acetoxybiphenyl-4-carboxylic acid. The chemical composition and compositional homogeneity of the copolyesters were determined by FTIR and 1H NMR spectroscopy: the data obtained suggest the absence of block sequences in macromolecules. The effect of the composition on the melting and glass transition temperatures of the copolyesters and their thermal stability was analyzed by DSC and TGA. The intrinsic viscosity and Huggins constants were determined by viscosimetry of diluted solutions of the copolyesters in dichloroacetic acid.
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Funding
This work was performed as a part of the State Task for the Institute of Petrochemical Synthesis of the Russian Academy of Sciences and was financially supported by the Russian Science Foundation (grant no. 17-79-30108).
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Mikhailov, P.A., Kalita, A.G., Zuev, K.V. et al. Synthesis of Poly(Ethylene Terephthalate)–4'-Hydroxybiphenyl-4-Carboxylic Acid Copolymers by Transesterification. Polym. Sci. Ser. B 63, 745–753 (2021). https://doi.org/10.1134/S1560090421060178
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DOI: https://doi.org/10.1134/S1560090421060178