Published in Russian Journal of Physical Chemistry B
Abstract—In this study the effect of ozone on the structural and dynamic characteristics of polymeric mixtures of polylactide–low density polyethylene (LDPE) of various compositions is investigated. It is shown by the method of electron paramagnetic resonance that the segmental mobility in the amorphous phase is higher in mixtures with a predominan...
Published in Russian Journal of Physical Chemistry B
AbstractThe interaction of macromolecules of the components of polymer complexes (PCs) based on poly-N-vinylpyrrolidone or polyethylene glycol with chitosan succinyl is studied by spectral and rheological methods. The presence of cooperative interaction between molecules through hydrogen bonds in the studied systems is proved by the spectroscopic m...
Published in Russian Journal of Physical Chemistry B
AbstractThe analytical dependence of the signal-to-noise ratio (SNR) of the measured interferograms of an infrared (IR) Fourier spectrometer on the temperature contrast of the observation path and on the physicochemical properties of the test substance is obtained. The analytical dependences of the minimum detectable concentration of a substance on...
Published in Russian Journal of Physical Chemistry B
AbstractExperiments with corona discharges over fluids such as alcohol, glycerin, butyl–glycol and clay for different applications have shown appearance of columns under the upper electrode. We present a qualitative interpretation of these results. We also present an interpretation of bubbles inside a liquid in the case of benzene and kerosene unde...
Published in Russian Journal of Physical Chemistry B
AbstractBased on the previously developed theory of the free induction decay and spin echo, the theory of the primary echo in flexible-chain polymers with isolated groups of three spins with arbitrary constants of dipole–dipole interaction (DDI) is proposed. The possibility of using the general theory of spin echoes in multispin systems is shown. A...
Published in Russian Journal of Physical Chemistry B
AbstractIn the past decade, nuclear magnetic resonance (NMR) has been actively used to study the basic principles of quantum computers. It is assumed that quantum correlations play a significant role in their performance. They exist at both low and high temperatures. At the same time, the time correlation functions of nuclear spin systems of solids...
Published in Russian Journal of Physical Chemistry B
AbstractThis study experientally investigated the vibration–vibration (V–V) energy transfer process in the HBr–H2 mixing system (molar ratio: 0.4; total pressure: 500 Pa) at room temperature (T = 295 K). Degenerate stimulated hyper-Raman pumping was used to excite HBr molecules to the X1Σ+v′′ = 5, 6 excited states, and the population distribution o...
Published in Russian Journal of Physical Chemistry B
AbstractThe solution of the Langmuir–Hinshelwood (L–H) differential kinetic equation describing a two-stage reaction of the photocatalytic oxidation of pollutants in air on the surface of a heterogeneous TiO2 catalyst is investigated, and a new approach to processing the experimental data based on this study is developed. A well-known solution to t...
Published in Russian Journal of Physical Chemistry B
AbstractThe increase in the concentration of methane in the atmosphere as a result of anthropogenic activity, melting of permafrost, and decomposition of gas hydrates on the seabed has attracted close attention of the scientific community in recent decades due to the potentially dangerous effect of methane on the ozone layer and the Earth’s climate...
Published in Russian Journal of Physical Chemistry B
AbstractThe results of the study of the variability of the electron concentration in the ionosphere in January 2009 are presented. Variations in the electron density in the ionosphere above individual stations and in the global electron content are considered based on the observation data and the results of the model calculations. Comparison of the...
