Thermo-oxidative Oligomerization of Aromatic Diamine

B. А. Zaitsev (Institute of Macromolecular Compounds, Russian Academy of Sciences, Saint Petersburg, 199004, Russia)
L. G. Kleptsova (Institute of Macromolecular Compounds, Russian Academy of Sciences, Saint Petersburg, 199004, Russia)
I. D. Shvabskaya (Institute of Macromolecular Compounds, Russian Academy of Sciences, Saint Petersburg, 199004, Russia)
А.E. Bursian (Institute of Macromolecular Compounds, Russian Academy of Sciences, Saint Petersburg, 199004, Russia)

Article ID: 3612

DOI: https://doi.org/10.30564/opmr.v3i1.3612

Abstract


Molecular spectroscopy (electronic, FT-IR, NMR), methods of thermal and elemental analysis were used for the first time to describe the process of thermo-oxidative oligomerization of 1,3-bis-(4-aminophenoxy)benzene. Introduction of this monomer into linear and network copolymers makes it possible to improve processability, mechanical strength and heat resistance of materials. The structures of copolymers obtained by thermo-oxidation of the diamine in various thermal regimes were studied. It was demonstrated that during prolonged heating of this diamine in air in the temperature range from 220 to 320°C, oligomeric aromatic diamines were formed; these products contained fragments of benzenoid and quinoid types.

Keywords


Aromatic diamines;Oxidative oligomerization;Thermal properties;Molecular spectroscopy

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References


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Copyright © 2021 Zaitsev Boris A., Kleptsova Larisa G., Shvabskaya Irina D., Bursian Anna E.


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