Antioxidation activity of several diphosphonates in thermooxidative stability of LDPE

The thermal degradation of low density polyethylene in the presence of several esters - diphosphonates compounds mostly used in anticancer treatment - was investigated by chemiluminescence at three temperatures: 180 deg C, 190 deg C and 200 deg C. Kinetic parameters that depict the stability of poly...

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Bibliographic Details
Published in:Journal of Optoelectronics and Advanced Materials 2006-04, Vol.8 (2), p.654-658
Main Authors: Jipa, S, Gorghiu, L M, Dumitrescu, C, Bumbac, M, Olteanu, R L, Zaharescu, T, Cuthon-Gourves, H
Format: Article
Language:English
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Summary:The thermal degradation of low density polyethylene in the presence of several esters - diphosphonates compounds mostly used in anticancer treatment - was investigated by chemiluminescence at three temperatures: 180 deg C, 190 deg C and 200 deg C. Kinetic parameters that depict the stability of polymer - temporal characteristics (oxidation induction time, half - period of oxidation and maximum oxidation time), oxidation rates and activation energies - were calculated from the dependencies of chemiluminescence intensity on thermal degradation time. The stabilization effectiveness of the tested compounds and other antioxidants, namely SANDOSTAB P-EPQ and TOPANOL OC is presented for comparison. Experimental data have demonstrated that one of the diphosphonates compounds is more efficient than the commercial antioxidants.
ISSN:1454-4164