Effect of solvent on radiation grafting and crosslinking of polyethylene |
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| Institution: | 1. Hungarian Academy of Sciences, Institute of Isotopes, Budapest, Hungary;2. Hungarian Academy of Sciences, Institute of Isotopes, Budapest, Hungary;1. INCDIE, ICPE CA, 313 Splaiul Unirii, Bucharest 030138, Romania;2. Valachia University, Faculty of Sciences, 18-24 Unirii St., Targoviste 130082, Romania;1. Composite Materials Group (CoMP), Research Institute of Material Science and Technology (INTEMA), Engineering Faculty, National University of Mar del Plata (UNMdP), Solís 7575, B7608FDQ, Mar del Plata, Argentina;2. Science and Technology Polymer Group, Research Institute of Material Science and Technology (INTEMA) – National University of Mar del Plata (UNMdP), Av. Juan B. Justo 4302, B7608FDQ, Mar del Plata, Argentina;1. Composite Materials Group (CoMP)-Research Institute of Material Science and Technology (INTEMA)-National University of Mar del Plata (UNMdP), Solís 7575, 7600 Mar del Plata, Argentina;2. Research Institute of Material Science and Technology (INTEMA)-National University of Mar del Plata (UNMdP), Av. Juan B. Justo 4302, 7600 Mar del Plata, Argentina |
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| Abstract: | Crosslinking of polyethylene influences its swelling properties. It could be expected that pre-crosslinking of polyethylene influences the rate and yield of grafting as well. This is demonstrated by pre-crosslinking of polyethylene and by its subsequent grafting with styrene after the trapped radicals had been annealed out.In order to obtain more direct information about the influence of swelling agent on polyethylene crosslinking, the elastic modulus of the crosslinked polyethylene was investigated. Stress–strain curves of polyethylene samples irradiated in different environments were recorded in molten state at 165 °C. The results show that irradiation of swollen polyethylene produces fewer effective crosslinks than does irradiation of dry polymer. |
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