Properties of radicals created by γ-ray irradiation of silk fabrics

LIU Rui-Qin，

XIE Lei-Dong，

TU Tie-Chen，

ZU Jian-Hua，

SHENG Kang-Long

Nuclear Science and Techniques

Vol.13, No.2

pp.110-114

Published in print 01 May 2002

CLC：O631.3+4, O636, O644.2

38900

The properties of radicals from γ-ray irradiated silk fabrics were studied by electron spin resonance method (ESR). The ESR spectra of silk fabrics irradiated in N2 showed a doublet at room temperature. The doublet became a singlet at g=2.0057 after placing the sample in air for 24 hours. This can be explained by formation of peroxide radicals. The radical concentration of the irradiated silk fabric and the decay rate of radicals are significantly affected by irradiation conditions, which include the absorbed dose, atmosphere, and water content of the silk fabric samples. However, no dose rate effect on the radical concentration was observed. The results are of help in our practice of property modification of silk products by radiation graft copolymerization.

Silk fabricγ-ray irradiationESR

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