Zobrazeno 1 - 10
of 55
pro vyhledávání: '"S. F. Grebennikov"'
Autor:
Vladimir E. Yudin, T. P. Maslennikova, S. F. Grebennikov, Irina P. Dobrovolskaya, Elena M. Ivan’kova, E. N. Dresvyanina
Publikováno v:
Polymer Science, Series A. 62:205-212
The effect of chitin nanofibrils on the sorption properties of composite films is studied. The value of sorption decreases with an increase in the content of chitin nanofibrils. It is assumed that the introduction of chitin nanofibrils into the chito
Publikováno v:
Liquid Crystals and their Application. 19:44-50
Publikováno v:
Fibre Chemistry. 51:45-56
The influence of the mechanism of sorption processes on the distribution parameters of the dimensionless value of sorption over a dimensionless chemical potential is analyzed. In the equation of the theory of volume filling of micropores, the rank of
Publikováno v:
Fibre Chemistry. 50:179-187
Swelling of amorphous/crystalline polymers is a complex phenomenon, accompanied by a change in the internal energy of the polymer, the absorbate, and the solid solution, and also by transition of the polymer from the glassy state to the rubbery (high
Autor:
V. A. Smotrin, N. G. Kvachadze, T. V. Smotrina, K. N. Busygin, S. F. Grebennikov, V. V. Zhizhenkov
Publikováno v:
Polymer Science, Series A. 59:206-214
It is shown that the sorption of water vapor in the amorphous regions of a liquid-crystalline polymer is accompanied by its swelling and the swelling pressure is responsible for the first stage of destruction of the most defective regions in the meso
Autor:
V. V. Zhizhenkov, S. F. Grebennikov, K. N. Busygin, N. G. Kvachadze, T. V. Smotrina, V. A. Smotrin
Publikováno v:
Polymer Science, Series A. 59:198-205
It is shown that the sorption method makes it possible to quantitatively estimate the presence of ordered structures in the supramolecular structure of partially crystalline and liquid-crystalline paraamide polymers. Using 1H NMR spectroscopy and the
Autor:
Irina P. Dobrovolskaya, Pierfrancesco Morganti, Elena M. Ivan’kova, V.Е. Yudin, E. N. Dresvyanina, S. F. Grebennikov, V. Yu. Elokhovskii, Katja Heppe
Publikováno v:
Europe PubMed Central
Interaction between water and composite films based on chitosan and chitin nanofibrils was studied. Isotherms of water vapor sorption by composite films were used to calculate partial values of entropy and enthalpy of sorbate; dependences of entropy
Publikováno v:
Fibre Chemistry. 47:329-336
Several properties of polymeric materials in a moist medium (crystallinity, glass point, volumetric deformation, thermodynamic properties) are mathematically modeled on the basis of the thermal equation for the sorption of water.
Publikováno v:
Polymer Science Series A. 57:501-507
Solutions in which low-molecular-mass substances and a swelling polymer form a homogeneous system have been studied. A method for predicting the activity and osmotic coefficients during variation in the solute concentration has been proposed. The dep
Publikováno v:
Fibre Chemistry. 47:187-191
Sorption modes were determined and diffusion coefficients were calculated for several antibiotics during ion exchange on polypropylene and polycaproamide fibrous ion exchangers. It was shown that the diffusion coefficients were largely determined by