Radical cations in irradiated solid n-alkanes and polyethylene


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Abstract

The method of time-resolved magnetic field effect (TR MFE) in recombination fluorescence of spin-correlated radical ion pairs has been used to detect and identify radical cations generated at early stages after the pulse irradiation of polyethylene and tricosane. From analysis of TR MFE curves, the widths of unresolved EPR spectra of radical cations have been determined, and their g factors have been evaluated. The results have demonstrated that, as distinct from n-alkanes, primary radical cations in polyethylene are localized on chemical defects of the polymer chain in a time of about 1 ns or less.

About the authors

V. I. Borovkov

Voevodskii Institute of Chemical Kinetics and Combustion, Siberian Branch; Novosibirsk State University

Author for correspondence.
Email: borovkov@kinetics.nsc.ru
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090

Yu. N. Molin

Voevodskii Institute of Chemical Kinetics and Combustion, Siberian Branch

Email: borovkov@kinetics.nsc.ru
Russian Federation, Novosibirsk, 630090

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