Radiation Grafting of Vinylalkoxysilanes
onto Polypropylene

S. S. Ivanchev*¹, M. Ratzsch**, A. M. Mesh*, S. Ya. Khaikin*,
H. Bucka**, and A. Hesse***

* Boreskov Institute of Catalysis (St. Petersburg Branch), Siberian Division, Russian Academy of Sciences,
pr. Dobrolyubova 14, St. Petersburg, 197198 Russia

** Agrolinz Melamin GmbH St-Peter-Straße 25, A-4012, Linz, Austria

*** Borealis AG, St-Peter-Straße 25, A-4012, Linz, Austria

Received October 25, 2000;
Revised Manuscript Received October 30, 2000

Abstract—The process of radiation grafting of vinylalkoxysilanes, monomers inactive in free-radical polymer-
ization, onto PP was studied. The effects of the chemical structure of vinylalkoxysilanes and their sorption–dif-
fusion characteristics, as well as irradiation parameters on the efficiency of radiation grafting were assessed.
Based on the data obtained, the experimental conditions which make it possible to exclude the diffusion control
of the process were determined. It was shown that the hydrolysis of alkoxy groups of vinylsilanes radiation-
grafted onto PP provides a means of obtaining structured PP with a desired content of gel fraction.

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