The dielectric properties of graphite oxide composite materials based on a biocompatible branched copolymer of N -vinylpyrrolidone with 1,6-hexanediol dimethacrylate and a cross-linked copolymer of N ‑vinylpyrrolidone with triethylene glycol dimethacrylate are studied. High-frequency (9.8 GHz) and low-frequency (25 Hz–1 MHz) measurements of the complex permittivity and electrical conductivity of polymer composites are carried out and their dependences on the polymer matrix topology and formation conditions are analyzed. Copolymers and composites based on them are characterized by IR, UV, and visible spectroscopy, dynamic light scattering, and the surface morphology of nanocomposite polymer matrices is characterized by optical microscopy. It is shown that the proposed electrophysical approach makes it possible to additionally characterize polymer matrices with carbon nanofillers.

Radical polymerization of unsaturated alkoxy-NNO-azoxy compounds was explored. Polymethoxy-NNO-azoxyethene, the first energetic polymer based on alkoxy-NNO-azoxy compounds, was obtained, and its major characteristics were studied. Thermodynamic calculations show that poly(methoxy-NNO-azoxyethene) may be of interest as a polymer component of active binders for solid composite rocket propellants.

Abstract The kinetic and molecular weight characteristics of the copolymers of n-butyl acrylate and styrene (95: 5 wt.%) obtained by the method of radical polymerization with reversible chain transfer were studied. The dependence of the refractive index on the molecular weight of the copolymers of n-butyl acrylate and styrene is shown.

Проанализированы структуры полимеров, использующихся в антиотражающих покрытиях при фотолитографии с длиной волны 193 нм. Получены серии полимеров с разными хромофорами, определены особенности процессов синтеза и предложены составы полимеров, пригодных для использования в составе композиций АОП.

In this work, a study was made of the copolymerization of styrene and divinylbenzene in the presence of alkoxyamine synthesized "in situ" from benzoyl peroxide and 2,2,6,6-tetramethylpiperidine-1-oxyl in a solution of n-butanol (50-70 wt.%).t 120 degrees C. According to the experimental data obtained, the critical gelation conversion lies in the range of 50-75%. A decrease in the critical gelation conversion is also observed when the content of n-butanol 60%, which is accompanied by a separation of the system into two phases, that is, polymer is precipitated. With a lower content of precipitator, the separation of the system into two phases does not occur. It is assumed that in this case the removal of highly branched macromolecules from the polymerizing system occurs as a result of occlusion of "suspended" double bonds that become inaccessible to radicals, but "suspended" double bonds of linear and weakly branched macromolecules remain available for participation in the reaction with growth radicals.