Supermolecular-structure formation in films prepared from the dianhydride of 3,3′,4,4′-diphenyloxide tetracarboxylic acid and various diamines

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Abstract

The structure of polyimide films synthesized from the dianhydride of 3,3′,4,4′-diphenyloxide tetracarboxylic acid and various diamines has been investigated. The structure of the diamine component has been observed to affect the formation of the structure in the initial polyimide films. It has been shown that the introduction of rigid diamine fragments (radicals of p-phenylene, diphenyl, fluorene and also the bis-(phenylamide) of terephthalic acid) favours the formation of mesomorphous structures in the polyamido-acid stage. By contrast, the use of radicals formed from diphenyloxide and the bis-(phenylamide) of isophthalic acid as the diamine component raises the chain flexibility and leads to the formation of an amorphous structure in the films. It is suggested that, in this case, the enhanced chain flexibility prevents the formation of aggregates in the reaction mixture and thus assists the progress of the single-stage polycondensation process.

References (10)

  • V.V. Korshak et al.

    Izv. AN SSSR, Ser. khim.

    (1967)
    J. Bateman et al.

    Termost. plastiki

    (1975)
  • M.M. Koton et al.

    Vysokomol. soyed.

    (1982)
    M.M. Koton et al.

    Polymer Sci. U.S.S.R.

    (1982)
  • A.V. Sidorovich et al.

    Vysokomol. soyed.

    (1981)
    A.V. Sidorovich et al.

    Polymer Sci. U.S.S.R.

    (1981)
  • M.M. Koton

    Vysokomol. soyed.

    (1974)
    M.M. Koton

    Polymer Sci. U.S.S.R.

    (1974)
  • S.V. Vinogradova et al.

    Vysokomol. soyed.

    (1966)
    S.V. Vinogradova et al.

    Polymer Sci. U.S.S.R.

    (1966)
There are more references available in the full text version of this article.

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Vysokomol. soyed. A25: No. 10, 2096–2101, 1983.

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