Formation and reactions of paramagnetic species in irradiated microheterogeneous copolymer systems with different electronic characteristics of componentsстатья

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Scopus, Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.

Работа с статьей


[1] Zezin A. A., Feldman V. I. Formation and reactions of paramagnetic species in irradiated microheterogeneous copolymer systems with different electronic characteristics of components // Radiation Physics and Chemistry. — 2002. — Vol. 63, no. 1. — P. 75–80. The formation of paramagnetic species in the radiolysis of styrene-butadiene block copolymers and interpolymers of polystyrene and polytrichlorobutadiene was studied at 77K using ESR spectroscopy. The results obtained reveal substantial non-additive effects in the radical yields. In the case of interpolymers, the observed yields are higher than the expected additive values (sensitization), whereas in the case of block copolymers the effect has the opposite sign (protection). The analysis of paramagnetic species demonstrates that the observed peculiarities result from interphase migration of electrons followed by their reactions with chemical traps (chlorinated groups or neutral radicals). It was concluded that the long-range reactions of electrons were controlled by electronic characteristics of microphases. (C) 2001 Elsevier Science Ltd. All rights reserved. [ DOI ]

Публикация в формате сохранить в файл сохранить в файл сохранить в файл сохранить в файл сохранить в файл сохранить в файл скрыть