Zobrazeno 1 - 10
of 123
pro vyhledávání: '"S.I. Kuchanov"'
Autor:
S.V. Panyukov, S.I. Kuchanov
Publikováno v:
Polymer Science U.S.S.R.. 32:682-689
Within the scaling theory a detailed analysis is made of the character of the swelling of network polymers obtained by branched polycondensation and crosslinking of linear chains via the terminal groups. The boundaries of the applicability of differe
Autor:
S.I. Kuchanov, S.V. Korolev
Publikováno v:
Polymer Science U.S.S.R.. 29:2537-2545
For calculating the characteristics of branched chain polymers which depend on conformation, a new approach based on the use of density correlation functions of particular molecular units has been developed. A method of analytical calculation of this
Publikováno v:
Polymer Science U.S.S.R.. 18:2141-2150
A method is proposed for the first time using kinetic process parameters and results concerning the heat resistance of initiators for the quantitative evaluation of MWD, the variation of the coefficient of polydispersion and numerical average molecul
Publikováno v:
Polymer Science U.S.S.R.. 20:2050-2060
The paper relates to topochemical and kinetic aspects of the bulk polymerization of acrylonitrile (AN). The very limited solubility of PAN in AN and the glassy state of the polymer phase result in the fact that it is only on the surface of polymer ph
Autor:
S.I. Kuchanov
Publikováno v:
Polymer Science U.S.S.R.. 30:2469-2477
The principal theoretical results of a dynamic description of copolymerization in multicomponent systems are discussed. With the aid of some elementary calculations general qualitative features of changes in composition and in compositional distribut
Publikováno v:
Polymer Science U.S.S.R.. 22:261-267
Quantitative ratios were derived to describe polymerization kinetics of vinyl chloride in the polymer phase with constant composition. Using a special device in a wide range of temperature and phase composition, rate constants of decomposition were m
Autor:
S.I. Kuchanov, S.V. Korolev
Publikováno v:
Polymer Science U.S.S.R.. 24:709-719
The distribution of units and composition heterogeneity of copolymers were accurately calculated for the first time using the kinetic system of complex-radical copolymerization, when, in parallel with a single introduction of monomers in the chain, i
Publikováno v:
Polymer Science U.S.S.R.. 17:3151-3158
A study was made of features of the physicochemical state of vinyl chloride (VC) in bulk polymerization processes with high degrees of conversion. It was found that the capillary porous coagulation structure consisting of PVC globules that is formed
Autor:
S.V. Korolev, S.I. Kuchanov
Publikováno v:
Polymer Science U.S.S.R.. 24:720-727
Detailed statistical description is given of the configuration of vinyl copolymers obtained by a complex-radical mechanism taking into account stereo-chemical configurations of substituents in monomer units of the macromolecules.
Autor:
D.N. Bort, S.I. Kuchanov
Publikováno v:
Polymer Science U.S.S.R.. 15:2712-2736
The main characteristics of the mechanism and kinetics of hetero-phase bulk (suspension) polymerization of vinyl chloride (VC) were defined. A critical analysis was made of literature data concerning bulk polymerization of VC, from which it was concl