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Influence of the e-beam irradiation and photo-oxidation aging on the structure and properties of LDPE-OMMT nanocomposite films |
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| Authors: | NTz Dintcheva S AlessiR Arrigo G PrzybytniakG Spadaro |
| Institution: | a Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, Università di Palermo, Viale delle Scienze, 90128 Palermo, Italy b Dipartimento di Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università di Palermo, Viale delle Scienze, 90128 Palermo, Italy c Institute of Nuclear Chemistry and Technology, Department of Radiation Chemistry and Technology, Laboratory of Radiation Modified Polymers, ul. Dorodna 16, 03-195 Warszawa, Poland |
| Abstract: | In this paper two systems, polyethylene (LDPE) and polyethylene/commercial organo-modified montmorillonite (LDPE/OMMT) nanocomposite, were subjected to e-beam irradiation at different doses and both the molecular modifications and mechanical properties have been investigated through solubility, FT-IR, calorimetric and tensile tests. Moreover, in some of the irradiated systems photo-oxidation aging was performed and its effects were studied. The results show an enhancement with irradiation of the positive effect of the nano-filler loading, related to the increase of the mechanical properties, due to the increase of the nano-filler polymer interaction.Nevertheless calorimetric and FT-IR data indicate that the well known reduction of LDPE/OMMT nanocomposite resistance to photo-oxidation ageing, with respect to LDPE, is amplified by ionizing radiation. |
| Keywords: | LDPE-OMMT nanocomposite film e-beam irradiation Photo-oxidation ageing Mechanical properties Carbonyl index Molecular modification |
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