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Synthesis of poly(butylene terephthalate)-poly(tetramethylene glycol) copolymers using terephthalic acid as starting material: A comparation between two synthetic strategies

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Abstract

Poly(butylene terephthalate)-poly(tetramethylene glycol) (PBT-PTMG) copolymer is prepared with terephthalic acid (PTA) rather than its dimethyl ester (DMT) as starting material by a two-step melt polycondensation. This process includes the synthesis of PBT prepolymer from PTA with 1,4-butanediol (BDO) in the first step, followed by the synthesis of PBT-PTMG copolymer from PBT prepolymer with PTMG in the second step. The molecular weight, composition as well as thermal and mechanical properties of the products from the two-step melt polycondensation are compared with the properties of the PBT-PTMG from the traditional one-step melt polycondensation. When the PTMG content is low, there is only slight difference in molecular weight, composition, thermal and mechanical properties among PBT-PTMG copolymers obtained from these two methods. However, when the PTMG content is high, only the two-step strategy is able to give high molecular weight products, and the products have comparable thermal and mechanical properties with those from traditional one-step strategy using DMT as starting material.

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Authors and Affiliations

  1. Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China

    Jun-wu Zhang, Fei Liu, Jing-gang Wang, Hai-ning Na  (那海宁) & Jin Zhu  (朱锦)

Authors
  1. Jun-wu Zhang
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  2. Fei Liu
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  3. Jing-gang Wang
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  4. Hai-ning Na  (那海宁)
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  5. Jin Zhu  (朱锦)
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Corresponding authors

Correspondence to Hai-ning Na  (那海宁) or Jin Zhu  (朱锦).

Additional information

This work was financially supported by the Key Research Program of the Chinese Academy of Sciences (No. KGZD-EW-606-16), Ningbo Key Lab of Polymer Materials (No. 2010A22001) and Ningbo Natural Science Foundation (Nos. 2013A610025, 2013A610023 and 2014A610135).

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Zhang, Jw., Liu, F., Wang, Jg. et al. Synthesis of poly(butylene terephthalate)-poly(tetramethylene glycol) copolymers using terephthalic acid as starting material: A comparation between two synthetic strategies. Chin J Polym Sci 33, 1283–1293 (2015). https://doi.org/10.1007/s10118-015-1673-4

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  • DOI: https://doi.org/10.1007/s10118-015-1673-4

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