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Synthesis of novel copoly(ether ether ketones): Property evaluation and microstructure analysis by NMR

Authors

  • Arun Kashinath Salunke,

    1. Synthetic Chemistry Division, Defence Research and Development Establishment, Jhansi Road, Gwalior 474002, India
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  • Mamta Sharma,

    1. Analytical Services Wing, Defence Research and Development Establishment, Jhansi Road, Gwalior 474002, India
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  • Vijay Kute,

    1. Synthetic Chemistry Division, Defence Research and Development Establishment, Jhansi Road, Gwalior 474002, India
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  • Susanta Banerjee

    Corresponding author
    1. Synthetic Chemistry Division, Defence Research and Development Establishment, Jhansi Road, Gwalior 474002, India
    • Polymer and Synthetic Materials Group, John F. Welch Technology Centre Pvt, Ltd., Export Promotion Industrial Park, Phase-2, Hoodi Village, Whitefield Road, Bangalore 560 066, India
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Abstract

A series of copolymers were prepared by the reaction of various bisphenols with a 50:50 molar ratio of two bisfluoro compounds, 4,4′-bis(1-fluoro-2-trifluoromethyl benzyl) benzene and 4,4′-difluorobenzophenone. The synthesized polymers were well characterized for their thermal, mechanical, and electrical performances. The copolymers showed a better set of properties than their analogous homopolymers derived from 4,4′-bis(1-fluoro-2-trifluoromethyl benzyl) benzene and bisphenols. The microstructures of the copolymers were analyzed by 1H-, 13C-, 19F-, distortionless enhancement by polarization transfer 90, two-dimensional 1H–1H homonuclear correlation spectroscopy, and 13C–1H correlation spectroscopy NMR techniques. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 1292–1305, 2005

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