2015 (1) 9

https://doi.org/10.15407/polymerj.37.01.060

Synthesis, properties and structure polyazomethines with perfluorinated mono- and biphenylene moieties in main chain

 

Ya.L. Kobzar, І.М. Tkachenko, V.I. Shtompel, О.V. Shekera, V.V. Shevchenko

 

Institute of Macromolecular Chemistry NAS of Ukraine

48, Kharkivske shose, Kyiv, 02160, Ukraine

 

Polym. J., 2015, 37, no. 1: 60-67.

 

Section: Synthesis polymers.

 

Language: Russian.

 

Abstract:

A series of polyazomethines, containing perfluorinated mono- and biphenylene fragments, along with 1,4-bisazomethinephenylens units, separated by nonfluorinated phenylenoxyde groups, were prepared by interaction of terephthalaldehyde and nucleus-fluorinated aromatic diamines, comprising amino groups in ortho-, meta- and para-position. The resulting polymers exhibited good thermal stabilities (the temperature of decomposition ranged from 325 to 452 °С). The glass transition temperature of obtained polymers based on the diamines with amino groups in ortho- and meta-position ranged from 144 to 166 °C. The glass transition temperature of polyazomethines based on the diamines with amino groups in para-position was not found up to 300 °С. Methods of small- and wide-angle X-ray scattering showed that synthesized polyazomethines have different structural organization (from crystalline to amorphous) induced by isomerism of azomethine groups and variation of nucleus-fluorinated components.

 

Keywords: fluorinated polyazomethines, isomeric polyazomethines, synthesis, isomerism, properties, structure.

 

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