caa a22 4500 463222946 CHVBK 20180405153218.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10853-006-1387-7 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1387-7 Elastic properties of degraded polypropylene [Elektronische Daten] [R. Navarro, J. d'Almeida, M. Rabello] Even though the ultimate mechanical properties of degraded polymers are widely reported in the literature, few papers dealt with the elastic properties of polymers after submitted to a degradation source. This topic is important to the understanding of the effects of degradation in polymer chemical and physical structure and also in the design of products where load bearing capability is a relevant requirement. The aim of this paper was to investigate and effects of photodegradation on the Young modulus of polypropylene. Several exposure conditions were applied in order to get a wide picture of this effect and hence to propose a reasonable mechanism for this influence. The elastic characteristics were discussed based on the variations in carbonyl index and in crystallinity during exposure and a new elastic property, named global compliance, was proposed. This article also analyses the influence of ultraviolet source on the photodegradation behaviour. Springer Science+Business Media, LLC, 2007 Navarro R. Department of Materials Engineering, Federal University of Campina Grande, Av Aprígio Veloso, 882, Campina Grande, PB, Brazil aut d'Almeida J. Department of Materials Science and Metallurgy, Pontifícia Universidade Católica, Rio de Janeiro, RJ, Brazil aut Rabello M. Department of Materials Engineering, Federal University of Campina Grande, Av Aprígio Veloso, 882, Campina Grande, PB, Brazil aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/6(2007-03-01), 2167-2174 0022-2461 42:6<2167 2007 42 10853 https://doi.org/10.1007/s10853-006-1387-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1387-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Navarro R. Department of Materials Engineering, Federal University of Campina Grande, Av Aprígio Veloso, 882, Campina Grande, PB, Brazil aut NATIONALLICENCE 700 1- d'Almeida J. Department of Materials Science and Metallurgy, Pontifícia Universidade Católica, Rio de Janeiro, RJ, Brazil aut NATIONALLICENCE 700 1- Rabello M. Department of Materials Engineering, Federal University of Campina Grande, Av Aprígio Veloso, 882, Campina Grande, PB, Brazil aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/6(2007-03-01), 2167-2174 0022-2461 42:6<2167 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer