Properties of Radicals Formed by the Irradiation of Wool Fibers | Zendy

Huiyong Wang | Zendy; RuiQin Liu | Zendy; Tu Tiechen | Zendy; Leidong Xie | Zendy; Kanglong Sheng | Zendy; Yali Chen | Zendy; Xin Tang | Zendy

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Properties of Radicals Formed by the Irradiation of Wool Fibers

Author(s) -

Huiyong Wang,

RuiQin Liu,

Tu Tiechen,

Leidong Xie,

Kanglong Sheng,

Yali Chen,

Xin Tang

Publication year - 2004

Publication title -

journal of radiation research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.643

H-Index - 60

eISSN - 1349-9157

pISSN - 0449-3060

DOI - 10.1269/jrr.45.77

Subject(s) - radical , electron paramagnetic resonance , wool , irradiation , photochemistry , polymer , chemistry , copolymer , chain reaction , polymer chemistry , materials science , organic chemistry , composite material , nuclear magnetic resonance , physics , nuclear physics

Wool fibers of different sample conditions were irradiated in different atmospheres by (60)Co gamma-rays and were studied by electron spin resonance method (ESR). It was found that a large percentage of the alpha-carbon radicals of polymer main chain were more long-lived radicals. The ESR measurements of irradiated cortex samples of the wool fibers proved that most radicals from the cortex were long-lived ones. Low water content (as low as 27.5%) in the reaction system did not greatly affect the radical formation, but higher water contents would reduce the radical concentrations dramatically and accelerate their decaying process. The results will be of help in property modification of wool products by radiation graft copolymerization.

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