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G. Zaikov (2005)
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ISSN 00125008, Doklady Chemistry, 2010, Vol. 435, Part 1, pp. 286–288. © Pleiades Publishing, Ltd., 2010. Original Russian Text © V.Z. Mingaleev, V.P. Zakharov, P.A. Taibulatov, Yu.B. Monakov, 2010, published in Doklady Akademii Nauk, 2010, Vol. 435, No. 2, pp. 205–207. CHEMISTRY Relationship of the Microheterogeneity of Isoprene–Butadiene Copolymers with the Kinetic Heterogeneity of Active Sites a b a a V. Z. Mingaleev , V. P. Zakharov , P. A. Taibulatov , and Academician Yu. B. Monakov Received May 20, 2010 DOI: 10.1134/S0012500810110042 Along with heterogeneity of copolymers by molec prene copolymers produced in the presence of a col ular weight (molecular weight heterogeneity), there loidaldispersion titanium catalyst with their molecu exist two more types of heterogeneity of copolymers, lar weight distributions. which are determined by intramolecular fluctuations An informative quantity characterizing the micro of compositions of certain sequences of monomeric heterogeneity of copolymers is the microheterogene units and by differences of compositions of individual ity coefficient K [5]: fractions of the copolymer. In other words, there are P P heterogeneity of sequences within a macromolecule bi bi K = + , (1) (microheterogeneity) and heterogeneity of fractional P + 2 P P + 2
Doklady Chemistry – Springer Journals
Published: Nov 26, 2010
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