Zobrazeno 1 - 10
of 175
pro vyhledávání: '"I.M. Barkalov"'
Publikováno v:
Journal of Polymer Science Part C: Polymer Symposia. 4:909-921
The radioinduced polymerization of vinyl acetate (VA) was studied in the liquid phase and two solid phases (glasslike and crystalline) over the temperature range of -196 to 0 deg C. A calorimetric technique was used to determine whether polymerizatio
Publikováno v:
Journal of Polymer Science Part C: Polymer Symposia. 4:897-908
Radioinduced polymerization of solid and liquid acrylonitrile (AN) at - 196 to 0 deg C was studied. A diathermic calorimeter was used to determine whether polymerization takes place in the solid state during irradiation or during the subsequent heati
Publikováno v:
Macromolecular Symposia. 160:21-26
Autor:
A.A. Karnaukh, I.M. Barkalov
Publikováno v:
Journal of Fluorine Chemistry. 96:71-75
Systematic IR-spectroscopic and thermographic studies of product formation and kinetics of gas-phase branched chain fluorination of halomethanes (RH) by trifluoromethylhypofluorite (CF 3 OF) are reviewed. A model of the complicated influence of both
Publikováno v:
Journal of Fluorine Chemistry. 96:57-60
Calorimetry and ESR spectroscopy were used to study the low-temperature fluorination (77–300 K) of unsaturated perfluorocarbons with fluorine. In the solid phase at 77–100 K (glassy or crystalline state) fluorination does not occur. On transition
Autor:
I.M. Barkalov, V.I. Goldanskii
Publikováno v:
International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry. 28:189-193
The existence of anomally long-living radicals (life time in liquid more than 100 days at 300 K) which arise in the process of radiolysis has been discovered in liquid perfluorocarbons. The ESR spectra analysis has allowed the singling out of two typ
Publikováno v:
Polymer Science U.S.S.R.. 24:330-335
The radiation-induced and chemically initiated telomerizations of the tetrafluoro-ethylene (TFE) solution in acetone both proceed efficiently and give rise to a transparent telomer solution. The process has a radical mechanism and its rate is in a di
Publikováno v:
European Polymer Journal. 20:1013-1017
Ionic polymerizations of cyclopentadiene (CPD), ethylene oxide (EO) and some other monomers in a matrix of butyl chloride (BC) were achieved by low-temperature postradiation polymerization during softening of the glassy system. To conduct the polymer
Publikováno v:
European Polymer Journal. 15:761-764
Dependent on the mode of preparation, 2-hydroxyethyl methacrylate (HEMA) can at low temperatures acquire either vitreous or crystalline states. On heating γ-irradiated vitreous HEMA, polymerization starts immediately after transition of the system f
Publikováno v:
European Polymer Journal. 17:773-778
Investigation of the effect of the α-CH3-group on low-temperature postpolymerization in devitrifying matrices leads to the following conclusions. 1. The low-temperature postpolymerization in supercooled alcohol solutions (Tg ∼ 102 K) is quite effi