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Russian Chemical Bulletin

, Volume 64, Issue 4, pp 930–935 | Cite as

Formation of the chain microstructure in the synthesis of adamantane-containing copolyimides in molten benzoic acid

  • M. R. Batuashvili
  • A. Yu. Tsegel´skaya
  • N. S. Perov
  • G. K. Semenova
  • B. S. Orlinson
  • A. A. Kuznetsov
Full Articles

Abstract

High-resolution 13C NMR spectroscopy was applied to study the chain microstructure of copolyimides obtained at 140 °C by one-pot high-temperature polycondensation in molten benzoic acid from 2,2-propylidene-bis(4-phenylene-4´-oxyphthalic acid) dianhydride (DA, intermonomer) and two comonomers, 1,3-bis(2-aminoethyl)adamantane (ADA) and 9,9-bis(4aminophenyl)fluorene, varying the order of introduction of components into the system. The experimentally found value of chain microheterogeneity coefficient determined from the 13C NMR data is in a good agreement with the values theoretically calculated using the mathematical model developed earlier by the authors and the kinetic data for the model reactions of acylation of amino groups and imidization of amido acid fragments. An ADA—DA-2,2-hexafluoropropylidene-bis(phthalic acid) dianhydride system provides another example of the principal possibility of varying orders of introduction of components to control the chain microstructure of copolyimides.

Key words

polyimides high-temperature polycondensation diamines tetracarboxylic acid dianhydrides benzoic acid copolymers chain microstructure high-resolution 13C NMR spectroscopy mathematical modeling kinetics 

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • M. R. Batuashvili
    • 1
  • A. Yu. Tsegel´skaya
    • 1
  • N. S. Perov
    • 1
  • G. K. Semenova
    • 1
  • B. S. Orlinson
    • 2
  • A. A. Kuznetsov
    • 1
  1. 1.N. S. Enikolopov Institute of Synthetic Polymer MaterialsRussian Academy of SciencesMoscowRussian Federation
  2. 2.Volgograd State Technical UniversityVolgogradRussian Federation

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