Synthesis and properties of hyperbranched polyimides derived from novel triamine with prolonged chain segments

Authors

  • Jie Shen,

    1. Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Faculty of Materials Science and Engineering, Hubei University, China
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  • Ying Zhang,

    1. Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Faculty of Materials Science and Engineering, Hubei University, China
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  • Wenqiu Chen,

    1. Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Faculty of Materials Science and Engineering, Hubei University, China
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  • Wenhao Wang,

    1. Division of Spine Surgery, Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, China
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  • Zushun Xu,

    1. Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Faculty of Materials Science and Engineering, Hubei University, China
    2. Division of Spine Surgery, Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, China
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  • Kelvin W. K. Yeung,

    1. Division of Spine Surgery, Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, China
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  • Changfeng Yi

    Corresponding author
    1. Division of Spine Surgery, Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, China
    • Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Faculty of Materials Science and Engineering, Hubei University, China
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Correspondence to: C. Yi (E-mail: changfengyi@hubu.edu.cn)

ABSTRACT

Novel pyridine-containing hyperbranched polyimides (HBPIs) were synthesized by using a new triamine 2,4,6-tris[3-(4-aminophenoxy)phenyl]pyridine with prolonged chain segments, ether linkage and meta-linked units as a BB′2-like monomer, various commercial aromatic dianhydrides as A2 monomers. Most of the obtained HBPIs were readily soluble in common organic solvents such as N,N-dimethylformamide, N,N-dimethylacetamide, N-methyl-2-pyrrolidone, m-Cresol, and so forth. Meanwhile, they also had good thermal stability with the glass transition temperatures (Tgs) all above 210 °C, the temperature at 10% weight loss of 537.1–574.4 °C in nitrogen atmosphere. Strong and flexible HBPI films were obtained, which had good mechanical properties with tensile strengths of 83.3–95.8 MPa, tensile modulus of 1.82–2.43 GPa and elongations at break of 4.84–6.98%. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 2425–2437

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