Dendritic aromatic polyamides and polyimides

Authors

  • Mitsutoshi Jikei,

    1. Department of Material-Process Engineering and Applied Chemistry for Environments, Akita University, Tegata Gakuen-Machi, Akita-Shi, Akita 010-8502, Japan
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  • Masa-aki Kakimoto

    Corresponding author
    1. Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Meguro-Ku, Tokyo 152-8550, Japan
    • Department of Organic and Polymeric Materials, Tokyo Institute of Technology, Meguro-Ku, Tokyo 152-8550, Japan
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Abstract

The syntheses and properties of dendritic and hyperbranched aromatic polyamides and polyimides are reviewed. In addition to conventional stepwise reactions for dendrimer synthesis, an orthogonal/double-stage convergent approach and dendrimer syntheses with unprotected building blocks are described as new synthetic strategies for dendritic polyamides. Hyperbranched polyamides and polyimides composed of various repeating units are presented. Besides the self-polycondensation of AB2-type monomers, new polymerization systems with AB4, AB8, A2 + B3, and A2 + BB′2 monomers have been developed for hyperbranched polyamides and polyimides. The copolymerization of AB2 and AB monomers is discussed separately with respect to the effects of branching units on the properties. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 1293–1309, 2004

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