Abstract
The hydrodynamic and conformational properties of a hyperbranched polymethylallylcarbosilane in hexane solutions have been studied by light scattering, sedimentation, translational diffusion, and viscometry. Fractions with M = (1–75) × 103 have been used in experiments. The solution behavior of the hyperbranched polymer significantly differs from the properties of both spherical particles and linear polymers. The shape of hyperbranched polymethylallylcarbosilane macromolecules differs from spherical—the asymmetry factor is p ≤ 1.5. Polymethylallylcarbosilane macromolecules in solutions are characterized by compact structure—the hydrodynamic radius is not higher than 4 nm at M = 75 × 103.
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Original Russian Text © E.B. Tarabukina, A.A. Shpyrkov, D.V. Potapova, A.P. Filippov, N.A. Shumilkina, A.M. Muzafarov, 2006, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2006, Vol. 48, No. 9, pp. 1655–1663.
This work was supported by the Russian Foundation for Basic Research (project 05-03-33152) and a scientific program of the St. Petersburg Scientific Center of the Russian Academy of Sciences (initiative project no. 6, Institute of Macromolecular Compounds, Russian Academy of Sciences).
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Tarabukina, E.B., Shpyrkov, A.A., Potapova, D.V. et al. Hydrodynamic and conformational properties of a hyperbranched polymethylallylcarbosilane in dilute solutions. Polym. Sci. Ser. A 48, 974–980 (2006). https://doi.org/10.1134/S0965545X06090136
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DOI: https://doi.org/10.1134/S0965545X06090136