Zobrazeno 1 - 10
of 27
pro vyhledávání: '"O. V. Romankevich"'
Autor:
O. A. Garanina, O. V. Romankevich
Publikováno v:
Fibre Chemistry. 50:528-532
The article investigates thermodynamic parameters of the dyeing process. The enthalpy change during dyeing with disperse dyes was determined. An equation for the dyeing process with the same conditions for the same type of dyes is proposed.
Autor:
Ya. V. Red’ko, O. V. Romankevich
Publikováno v:
Fibre Chemistry. 46:257-261
The ability to fabricate magnetic synthetic fibers by synthesizing a magnetite dispersion in a dyeing vat and precipitating colloidal particles onto the surface of polyamide fibers using heterocoagulation was demonstrated experimentally and validated
Publikováno v:
Fibre Chemistry. 46:161-164
We consider the thermodynamics of dyeing of polyacrylonitrile fiber by cationic dyes. The dye bath – fiber system is divided into three layers: the dye solution in the dye bath, the interphase layer, and the amorphous regions of the fiber.
Autor:
O. V. Romankevich, O. A. Garanina
Publikováno v:
Fibre Chemistry. 43:344-347
An expression for estimating the affinity of a direct dye for cellulose fiber was obtained taking into account the exothermicity of the process. It is proposed that an electrolyte increases the affinity of a direct dye during dyeing by affecting the
Autor:
O. V. Romankevich
Publikováno v:
Fibre Chemistry. 40:434-437
The equation describing sorption of vapors by solutions of low-molecular-weight substances in the case of formation of solvates with a nonvolatile solvent can coincide in form with the BET equation. In calculating the specific surface area with the s
Publikováno v:
Fibre Chemistry. 40:349-354
Physicochemical aspects of dyeing with polyaniline are considered. It is shown to be possible to attain the first percolation threshold for electrically conducting polyamide fabric. An equation has been obtained for estimating the thermodynamic affin
Publikováno v:
Fibre Chemistry. 35:98-104
Using aminolysis of caprolactam by diethylenetriamine, it is shown that the rate constant of this reaction is almost independent of the basicity of the aliphatic amine, but it decreases significantly in going from a melt of a mixture of amine and cap
Publikováno v:
Fibre Chemistry. 42:157-159
An equation was obtained for evaluating the thermodynamic affinity of a disperse dye for a fibre. Quantities Δh D and K D , which are functions of the composition of the dye bath, temperature, and state of the fibre material, can characterize the ch
Publikováno v:
Fibre Chemistry. 32:190-193
The extension ratio of a composite fibre λ t was calculated based on the mass balance using the values of the extension ratio of particles of disperse phase λ f and polymer matrix λ m and model concepts concerning the structure of the dispersion.
Publikováno v:
Fibre Chemistry. 32:100-104
As a result of studying ripening of alkali cellulose by the Monte Carlo method, it was found that the following model most closely fits the experimental data on the MWD of alkali cellulose after ripening: alkali cellulose is ripened by the parallel o