Abstract
Seven polynorbornene samples containing trimethylsilyl side groups that were prepared by the addition polymerization of 5-trimethylsilyl-2-norbornene in the presence of catalytic systems (π-C5H9NiCl)2-methylaluminoxane and nickel naphthenate-methylaluminoxane have been studied by translational isothermal diffusion and viscometry. The molecular masses of the polymer samples are measured. Kuhn-Mark-Houwink equations for diffusion coefficient D and intrinsic viscosity [η] are determined in toluene at 25°C: D = 6.94 × 10−4 M −0.61 and [η] = 1.53 × 10−3 M 0.82. The equilibrium rigidity of polymers chains is estimated as A = 47 ± 9 Å. The conformational features of the silicon-containing polynorbornene are analyzed by the PM3 quantumchemical semiempirical method on the basis of simulation of its decamer chain fragments. In terms of microstructure and equilibrium rigidity, the above-described addition poly(trimethylsilylnorbornene) is close to poly(trimethylsilylpropyne) synthesized using niobium pentachloride as a catalyst. This finding explains similar membrane gas-separation properties of these polymers.
Similar content being viewed by others
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © N.P. Yevlampieva, I.I. Zaitseva, M.L. Gringolts, P.P. Khlyabich, Yu.V. Rogan, E.I. Ryumtsev, 2008, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2008, Vol. 50, No. 10, pp. 1823–1832.
This work was supported in part by the Russian Foundation for Basic Research, project no. 06-03-32686.
Rights and permissions
About this article
Cite this article
Yevlampieva, N.P., Zaitseva, I.I., Gringolts, M.L. et al. Hydrodynamic and conformational properties of silicon-substituted addition-type polynorbornene macromolecules. Polym. Sci. Ser. A 50, 1082–1089 (2008). https://doi.org/10.1134/S0965545X0810009X
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0965545X0810009X