Dyed acrylic-acid grafted polypropylene films for high-dose radiation dosimetry

被引:16
作者
Abdel-Fattah, AA [1 ]
Said, FIA [1 ]
Ebraheem, S [1 ]
El-Kelany, M [1 ]
El Miligy, AA [1 ]
机构
[1] AEA, Natl Ctr Radiat Res & Technol, Cairo, Egypt
关键词
D O I
10.1016/S0969-806X(98)00259-X
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Gamma radiation-induced polymerization of acrylic acid (AAc) onto polypropylene (PP) film has been carried out under nitrogen atmosphere. The grafted film of PP-g-PAAc was allowed to react with solutions of two ionic dyes, namely malachite green (MALG) or methylene green (METG). The Investigations show that these new dosimeter films of PPMALG and PPMETG may be useful for high-close gamma radiation applications. The useful absorbed dose range of the dyed films extends up to about 400 kGy, with a minimum useful dose of about 5 kGy. The radiation-induced colour bleaching has been analyzed with visible spectrophotometry, either at the maximum of the absorption band peaking at 601 nm (for PPMETG)) or that peaking at 623 nm for (PPMALG). The effects of relative humidity during irradiation, shelf-life and post-irradiation storage in dark and indirect daylight conditions on dosimeters performance are discussed. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:271 / 277
页数:7
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