New possibilities for the synthesis of high-molecular weight poly(2,5(6)-benzimidazole) and studies of its solutions in DMSO-based complex organic solvent

I. I. Ponomarev, Yu Yu Rybkin, Yu A. Volkova, D. Yu Razorenov, K. M. Skupov, Iv I. Ponomarev, A. S. Senchukova, A. A. Lezov, N. V. Tsvetkov

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

New possibilities for the synthesis of high-molecular weight poly(2,5(6)-benzimidazole) (ABPBI) based on a new monomer, 3,4-diaminobenzoic acid monophosphate, in polyphosphoric acid medium at high monomer concentration under stirring and on a Teflon® surface without stirring are investigated. New complex solvent for ABPBI is found. This solvent is based on dimethyl sulfoxide, methanol, and potassium hydroxide. For the first time, molecular weight values are obtained by dynamic light scattering and viscometry in complex solvent. In addition, Kuhn segment values are estimated. Maximal molecular mass M value reaches 94 kDa. The values of macromolecular equilibrium rigidity A are estimated as 4.4–5.7 nm according to translational diffusion coefficient and 3.3 nm according to intrinsic viscosity measurements.

Язык оригиналаанглийский
Страницы (с-по)2320-2327
Число страниц8
ЖурналRussian Chemical Bulletin
Том69
Номер выпуска12
DOI
СостояниеОпубликовано - дек 2020

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