Radical pairs in γ-irradiated polymers detected by E.S.R.

P. Hesse; H. Heusinger

doi:10.1016/0020-7055(75)90030-3

Radical pairs in γ-irradiated polymers detected by E.S.R.

P. Hesse
, H. Heusinger

Radiochemistry Munich

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The E.S.R. signal due to the Δm = 2 transition of radical pairs was observed in a number of γ-irradiated polymers (polyacrylates, diene polymers, polystyrene and polypropylene sulfide). The distance and concentration of paired radicals were calculated from the position and the intensity of the Δm = 2 signal. In all polymers investigated, about 2 per cent of the radicals were arranged in pairs, the distance being 5-6 Å. It is concluded that there is no direct connection between the presence of radical pairs and cross-linking or chain scission.

Original language	English
Pages (from-to)	1-6
Number of pages	6
Journal	International Journal for Radiation Physics and Chemistry
Volume	7
Issue number	1
DOIs	https://doi.org/10.1016/0020-7055(75)90030-3
State	Published - Feb 1975

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title = "Radical pairs in γ-irradiated polymers detected by E.S.R.",

abstract = "The E.S.R. signal due to the Δm = 2 transition of radical pairs was observed in a number of γ-irradiated polymers (polyacrylates, diene polymers, polystyrene and polypropylene sulfide). The distance and concentration of paired radicals were calculated from the position and the intensity of the Δm = 2 signal. In all polymers investigated, about 2 per cent of the radicals were arranged in pairs, the distance being 5-6 {\AA}. It is concluded that there is no direct connection between the presence of radical pairs and cross-linking or chain scission.",

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AU - Hesse, P.

AU - Heusinger, H.

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N2 - The E.S.R. signal due to the Δm = 2 transition of radical pairs was observed in a number of γ-irradiated polymers (polyacrylates, diene polymers, polystyrene and polypropylene sulfide). The distance and concentration of paired radicals were calculated from the position and the intensity of the Δm = 2 signal. In all polymers investigated, about 2 per cent of the radicals were arranged in pairs, the distance being 5-6 Å. It is concluded that there is no direct connection between the presence of radical pairs and cross-linking or chain scission.

AB - The E.S.R. signal due to the Δm = 2 transition of radical pairs was observed in a number of γ-irradiated polymers (polyacrylates, diene polymers, polystyrene and polypropylene sulfide). The distance and concentration of paired radicals were calculated from the position and the intensity of the Δm = 2 signal. In all polymers investigated, about 2 per cent of the radicals were arranged in pairs, the distance being 5-6 Å. It is concluded that there is no direct connection between the presence of radical pairs and cross-linking or chain scission.

UR - https://www.scopus.com/pages/publications/49549143968

U2 - 10.1016/0020-7055(75)90030-3

DO - 10.1016/0020-7055(75)90030-3

M3 - Article

AN - SCOPUS:49549143968

SN - 0020-7055

VL - 7

SP - 1

EP - 6

JO - International Journal for Radiation Physics and Chemistry

JF - International Journal for Radiation Physics and Chemistry

IS - 1

ER -

Radical pairs in γ-irradiated polymers detected by E.S.R.

Abstract

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