Zobrazeno 1 - 10
of 128
pro vyhledávání: '"A.D. Litmanovich"'
Autor:
Yulia I. Denisova, Maria L. Gringolts, Eugene Sh. Finkelshtein, A.D. Litmanovich, Georgiy A. Shandryuk, Yaroslav V. Kudryavtsev, L. B. Krentsel
Publikováno v:
European Polymer Journal. 86:143-153
Crystallinity of statistical multiblock copolymers of norbornene and cyclooctene with nearly equimolar composition and different degrees of blockiness is studied by differential scanning calorimetry including thermal fractionation by successive self-
Autor:
Yaroslav V. Kudryavtsev, Yulia I. Denisova, Eugene Sh. Finkelshtein, Alexander S. Peregudov, Maria L. Gringolts, L. B. Krentsel, A.D. Litmanovich, E. A. Litmanovich
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 11, Iss 1, Pp 1796-1808 (2015)
Beilstein Journal of Organic Chemistry
Beilstein Journal of Organic Chemistry
The cross-metathesis of polynorbornene and polyoctenamer in d-chloroform mediated by the 1st generation Grubbs’ catalyst Cl2(PCy3)2Ru=CHPh is studied by monitoring the kinetics of carbene transformation and evolution of the dyad composition of poly
Autor:
E. Sh. Finkel'shtein, L. B. Krentsel, Yaroslav V. Kudryavtsev, Yu. I. Denisova, Georgiy A. Shandryuk, Maria L. Gringolts, A.D. Litmanovich
Publikováno v:
RSC Advances. 5:316-319
Copolymers of norbornene and cyclooctene were synthesized for the first time by the cross-metathesis of polynorbornene with polyoctenamer. This strategy made it possible to use the 1st generation Grubbs catalyst, which exhibits low activity toward co
Autor:
E. A. Litmanovich, Georgiy A. Shandryuk, A.D. Litmanovich, L. B. Krentsel, Yaroslav V. Kudryavtsev, Sergey O. Ilyin, Yulia I. Denisova, Valery G. Kulichikhin, Alexander Ya. Malkin, Galina N. Bondarenko
Publikováno v:
Macromolecules. 47:4790-4804
Bulk and solution studies revealed a strongly pronounced effect of chain structure on the rheological and relaxation behavior of well-characterized vinyl acetate–vinyl alcohol copolymers of similar composition and polymerization degree. The frequen
Autor:
Galina N. Bondarenko, Georgiy A. Shandryuk, Sergey O. Ilyin, Valery G. Kulichikhin, A. Ya. Malkin, A.D. Litmanovich, L. B. Krentsel, Ya. V. Kudryavtsev, Yu. I. Denisova
Publikováno v:
Polymer Science Series A. 56:196-204
A comparative study of the viscoelastic properties of melts of vinyl acetate-vinyl alcohol copolymers with equimolar compositions characterized by different statistical distributions of chain units has been performed. It has been shown that the princ
Autor:
Yaroslav V. Kudryavtsev, Yu. I. Denisova, Vadim V. Podbelskiy, E. A. Litmanovich, L. B. Krentsel, A.D. Litmanovich, Alexander S. Peregudov
Publikováno v:
Polymer Science Series B. 54:375-382
The kinetics and structure of products of the alkaline hydrolysis of poly(vinyl acetate) in an acetone-water mixture are studied via 1H NMR spectroscopy. The reaction is considerably accelerated and, according to the dynamic light-scattering data, is
Publikováno v:
Macromolecular Theory and Simulations. 19:269-277
An algorithm was developed to generate an ensemble of statistical multiblock AB copolymer chains via a polymer-analogous reaction with acceleration. Ordering in the cylindrical ensemble of such chains is simulated via successive rotation of chains un
Autor:
V.Ya. Shtern, A.D. Litmanovich
Publikováno v:
Journal of Polymer Science Part C: Polymer Symposia. 16:1375-1382
A method of theoretical analysis of copolymers fraction is described. Using the method the cross-fractionation of copolymers is considered. It is found for copolymers of a typical molecular and composition distribution that: the differential molecula
Publikováno v:
European Polymer Journal. 26:181-188
1H- and 13C-NMR spectra of compositionally homogeneous samples of chlorinated natural rubber containing 0.4-3.0 Cl/C5 have been investigated. In the samples of composition Cl/C5 ⩽ 1 there are no units containing > 1 chlorine atom, meaning that chlo
Publikováno v:
European Polymer Journal. 21:405-408
Kinetics of the initial stage of the chlorination of natural rubber(NR), up to chlorine content ⩽1 Cl/C 5 , have been investigated using a stop-flow method in CCl 4 at room temperature. The chlorination is very fast and is accelerated by the produc