Electrical Conductivity for Irradiated, Grafted Polyethylene and Grafted Polyethylene with Metal Complex | ||||
| Egyptian Journal of Solids | ||||
| Article 11, Volume 29, Issue 2, 2006, Page 351-362 PDF (448.6 K) | ||||
| DOI: 10.21608/ejs.2006.149286 | ||||
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| Abstract | ||||
| The effect of silver metal (Ag) in DC conductivity of high density polyethylene (HDPE) and low density polyethylene (LDPE) grafted films with acrylic acid (AAc) at different percentage 95, 120 and 160% has been investigated. It is also aimed to perform an extensive study on the electrical properties of (LDPE) and (HDPE) before and after irradiation by γ-rays at different environment in order to understand the nature of the conduction mechanism and charge transport in these materials. The results show a substantial increase in the electrical conductivity ( σ ) for both types of polyethylene exposed to γ-irradiation in air and in vacuum at dose range (0 – 500 kGy). The improvement in σ for LDPE in oxygen is more pronounced than HDPE. Thermal activated conduction mechanism is predominant for both LDPE and HDPE at different γ-doses in air, and in oxygen. The grafting with PAAc causes an increase in the conductivity by approximately six order higher than that of ungrafted films. Grafted copolymer was obtained by adding metal salt solution AgNO3 to both graphted LDPE and HDPE at 373 K for 15hrs. Increasing of Ag ions in the copolymer samples at room temperature leads to a slight decrease in the σ value. | ||||
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