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Change of microstructure of polyimide thin films under the action of supercritical carbon dioxide and its influence on dielectric constant

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A series of polyimide films, whose repeating units had different contents of fluorine atoms in the structure, was subjected to swelling in supercritical carbon dioxide. The greatest increase in the free volume was 257 % of the initial value. This led to the formation of foams and reduction of the dielectric constant even below 1.5.

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Acknowledgments

The funding provided to the authors MB and IS by the European Union’s Seventh Framework Program (FP7/2007–2013) under Grant agreement n°264115—STREAM is gratefully acknowledged. IAR, OVS, and AYuN were supported by funding from the Russian Foundation for Basic Research (13-08-00520-a).

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Authors and Affiliations

  1. Nesmeyanov Institute of Organoelement Compounds, Vavilov Street 28, Moscow, 119991, Russia

    I. A. Ronova, O. V. Sinitsyna & A. Yu. Nikolaev

  2. Petru Poni Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41A, Iasi, 700487, Romania

    M. Bruma, I. Sava & S. Chisca

  3. Semenov Institute of Chemical Physics, Kosygin Street 4, Moscow, 117977, Russia

    N. G. Ryvkina

Authors
  1. I. A. Ronova
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  2. M. Bruma
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  3. O. V. Sinitsyna
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  4. I. Sava
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  5. A. Yu. Nikolaev
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  6. S. Chisca
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  7. N. G. Ryvkina
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Correspondence to I. A. Ronova.

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Ronova, I.A., Bruma, M., Sinitsyna, O.V. et al. Change of microstructure of polyimide thin films under the action of supercritical carbon dioxide and its influence on dielectric constant. Struct Chem 25, 1687–1694 (2014). https://doi.org/10.1007/s11224-014-0443-1

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  • DOI: https://doi.org/10.1007/s11224-014-0443-1

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