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Author Al Naimi, Sabah M. [صباح النعيمي]en_US
Available date 2009-11-25T15:21:20Zen_US
Publication Date 2005en_US
Publication Name Qatar University Science Journal
Citation Qatar University Science Journal, 2005, Vol. 25, Pages 46-54.en_US
URI http://hdl.handle.net/10576/9909en_US
Abstract The optical and electrical properties of pure and treated low density polyethylene (LDpE) were investigated. These measurements have been carried out at various times of immersion for LDPE films in 10% solution of CuSO+. The optical absorption spectra were measured in the wavelength range 200—► ll00 nm. The optical energy gaps and energy bandwidth of the tall of localized state (Eoo1 and AE) were calculated at different times of exposure to CuSOa. The a.c. conductivity was studied in frequency range 102 —> I}s Hz. The data of a.c. conductivity were analyzed. to obtain the d.c. conductivity (o'6") and the optical dielectric constant (e'-). The results of this study show that: (1) Direct and indirect optical transitions exist, (2) Direct and indirect energy gaps increase as the exposure time increases, (3) The Urbach energy band tail decreases as time increases, (4) The d.c. conductivity decreases, while the dielectric constant increases as time increases. These results could be explained by the fact that sulfate ions have caused formation of voids and degradation of the LDPE as time increased.en_US
Language enen_US
Publisher Qatar Universityen_US
Subject Physicsen_US
Subject الفيزياءar
Title The Optical and Electrical Properties of Low Density Polyethylene Films in CuSo4 Solutionen_US
Alternative Title الخواص البصرية والكهربية لشرائح من البولي - إثيلين منخفضة الكثافة في محلول كبريتان النحاسar
Type Articleen_US
Pagination 46-54en_US
Volume Number 25en_US


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