Phase state diagram of a poly(amic acid)–solvent–nonsolvent system
- Authors: Shcherbina A.A.1,2, Gerasimov V.K.1, Semenov T.P.1, Chalykh A.E.1
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Affiliations:
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences
- D. I. Mendeleev University of Chemical Technology of Russia
- Issue: Vol 67, No 10 (2018)
- Pages: 1831-1837
- Section: Article
- URL: https://journals.rcsi.science/1066-5285/article/view/243085
- DOI: https://doi.org/10.1007/s11172-018-2296-z
- ID: 243085
Cite item
Abstract
Phase behavior and structure formation was studied using optical interferometry, nephelometry, and refractometry in the polymer–solvent–nonsolvent system for DMF solutions of two poly(amic acids): based on 3,3′,4,4′-benzophenonetetracarboxylic acid dianhydride and meta-phenylenediamine (PAA-1) and pyromellitic acid dianhydride and 4,4′-oxydianiline (PAA-2). Distilled water and its mixtures with DMF were used as a nonsolvent. According to the results of the study, isothermal cross sections of the phase state diagram in the threecomponent system were plotted, the position of the critical point, the spinodal, and the conodes were determined, the movement of the figurative points in the system was traced depending on the nonsolvent composition.
About the authors
A. A. Shcherbina
A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences; D. I. Mendeleev University of Chemical Technology of Russia
Author for correspondence.
Email: aachalykh@mail.ru
Russian Federation, Build. 4, 31 Leninsky prosp., Moscow, 119071; 9 Miusskaya pl., Moscow, 125047
V. K. Gerasimov
A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences
Email: aachalykh@mail.ru
Russian Federation, Build. 4, 31 Leninsky prosp., Moscow, 119071
T. P. Semenov
A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences
Email: aachalykh@mail.ru
Russian Federation, Build. 4, 31 Leninsky prosp., Moscow, 119071
A. E. Chalykh
A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences
Email: aachalykh@mail.ru
Russian Federation, Build. 4, 31 Leninsky prosp., Moscow, 119071