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Structural transformations of certain aromatic polyimides at increased temperatures

  • Physical Chemistry
  • Published:
Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    The aging of aromatic polyimides, produced on the basis of the dianhydride of pyromellitic acid with anilinephthalein (I) and the dianhydride 3,3′–4,4′-diphenyloxytetracarboxylic acid with anilinefluorene (II) at temperatures preceding weight losses, involves the development of processes of structuration and destruction; moreover, structuration dominates. The principles of the formation of cross-linked structures of the polyimides and the nature of the accumulation of the cross-links were established.

  2. 2.

    The dependence of the intrinsic viscosity of the polyimide (II) on the molecular weight was found. The values of the thermodynamic parameter of the polymer-liquid interaction was calculated.

  3. 3.

    The structuration of polyimides leads to a change in certain properties of the polyimides.

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Authors and Affiliations

  1. Institute of Heteroorganic Compounds, Academy of Sciences of the USSR, USSR

    P. N. Gribkova, V. V. Rodé & V. V. Korshak

Authors
  1. P. N. Gribkova
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  2. V. V. Rodé
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  3. V. V. Korshak
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 568–575, March, 1970.

The article is published on the basis of a resolution of the Conference of Editors-in-Chief of the Journals of the Academy of Sciences of the USSR from July 12, 1962, as the dissertation work of P. N. Gribkova.

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Gribkova, P.N., Rodé, V.V. & Korshak, V.V. Structural transformations of certain aromatic polyimides at increased temperatures. Russ Chem Bull 19, 524–529 (1970). https://doi.org/10.1007/BF00848972

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  • DOI: https://doi.org/10.1007/BF00848972

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