The crosslinking of polyethylene irradiated in a multilayer system |
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| Affiliation: | 1. Department of Physics, Faculty of Science, New Valley University, P.O. Box: 72511, New Valley, Egypt;2. Unidad Académica de Estudios Nucleares, Universidad Autonoma de Zacatecas, Ciprés 10, Fracc. La Peñuela, 98060, Zacatecas, Zac, Mexico;3. Department of Engineering Mechanics, Northwestern Polytechnical University, Xi''an, 710072, China;4. Physics Department, Faculty of Science, Sohag University, P.O. Box: 82524, Sohag, Egypt;5. Department of Mining and Metallurgical Engineering, Faculty of Engineering, AlAzharUniversity, Cairo, Egypt;6. Powder Technology Division, Manufacturing Technology Department, (CMRDI), Helwan, Egypt;7. Manufacturing Engineering and Production Technology Department,Modern Academy for Engineering and Technology, Cairo, P.O.Box:112571, Egypt;8. Department of Physics, Faculty of Engineering, FayoumUniversity, P.O.Box: 63514, Fayoum, Egypt;1. Pacific Northwest National Laboratory, Richland, WA, 99354, United States;2. Department of Mechanical Engineering, Texas A&M University, College Station, TX, 77843, United States;3. National Center for Electron Beam Research, Texas A&M University, College Station, TX, 77843, United States;4. Steri-Tek, Fremont, CA, 94538, United States;5. Global Sterility Assurance, Becton, Dickinson and Company, Research Triangle Park, NC, 27709, United States |
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| Abstract: | ![]()
Polyethylene films characterized by different thickness and crosslinking efficiencies were irradiated with 1.5 MeV electrons at an average current density of 0.016 mA/cm2. The samples were in the form of film stacks with or without distance supports between the polymer layers. Some of the samples were irradiated in an N2 atmosphere. The absorbed dose in a given polymer layer was estimated from the gel content. From the dose-gel dependence estimated for each polymer layer and the dose-depth dependence based on the literature data, the gel-depth and dose-depth curves were plotted. From the comparison of these curves with experimental data it was concluded that the absorbed dose depends on the polymer film thickness and the presence or absence of the gas phase between polymer layers. |
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