عنوان المقالة:ثار تشعيع جاما الخصائص البصرية للأقمشة القطنية العراقية المصبوغة Effects of Gamma-Irradiation the Optical Properties of Dyed Iraqi Cotton Fabrics
S.K.J. Al-Ani, A.S. Mahmood, A.M. Holi. & H.F.Oleiwi
Abstract
The effect of gamma - irradiation on the optical properties (optical energy gap and Urbach edge) of dyed Iraqi cotton fabrics were investigated for the first time. For samples dyed before irradiation, it was found that the optical energy gap increased with dose to its maximum value (at 1kGy> before decreasing exponentially was the dose increased up to 1140 k Gy . For samples dyed after irradiation, Eopt. , decreased with doses more slowly . The optical sense was found for Urbach edge (Ec).. The overall behavior suggested that the cross linking process is the dominant reaction at low doses, while at higher doses. the process was dominated by degradation, and that the presence of dye molecules during irradiation introduced significant chemical and structural changes in the cotton fabrics.
ا.د سلوان كمال جميل العاني | Prof.Salwan K.J.Al-Ani (Ph.D) FInstP | 27655