Positron Annihilation Lifetime Spectroscopy of Carbon Black- and Silica-Filled Rubber

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dc.contributor.author Semaan, Mars E.
dc.contributor.author Quarles, C.A.
dc.contributor.author Urban-Klaehn, J. M.
dc.contributor.author Gerspacher, M.
dc.contributor.author Nikiel, Leszek
dc.date.accessioned 2016-04-18T13:16:45Z
dc.date.available 2016-04-18T13:16:45Z
dc.date.copyright 2001
dc.date.issued 2016-04-18
dc.identifier.issn 0255-5476 en_US
dc.identifier.uri http://hdl.handle.net/10725/3605
dc.description.abstract Lifetime spectroscopy has been used to investigate different grades of carbon black (CB) and silica mixed into a variety of rubbers as a function of CB or silica loading. The spectra were analyzed into three lifetimes. The results show that: (1) The longest observed lifetime, tau (3), attributed to ortho positronium formation depends on the rubber but not on filler loading or type of CB. The free volume size in the rubber is not affected by the addition of the filler. (2) The intensity, I-3, of ortho positronium formation depends both on the loading and on the type of CB, but is less dependent on loading in the case of silica. (3) The intermediate lifetime, tau (2), depends both on the loading of the filler and on the type of CB. For CB, this indicates that tau (2) is not simply the additive result of bulk annihilation in the rubber and CB. Rather the CB loading creates new trapping sites at the CB-rubber interface that depend on the type of CB.
dc.language.iso en en_US
dc.title Positron Annihilation Lifetime Spectroscopy of Carbon Black- and Silica-Filled Rubber en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SAS en_US
dc.author.idnumber 199690260 en_US
dc.author.woa N/A en_US
dc.author.department Natural Sciences en_US
dc.description.embargo N/A en_US
dc.relation.journal Materials Science Forum en_US
dc.journal.volume 363-365 en_US
dc.article.pages 343-345 en_US
dc.identifier.doi http://dx.doi.org/10.4028/www.scientific.net/MSF.363-365.343 en_US
dc.identifier.ctation Quarles, C. A., Urban-Klaehn, J. M., Gerspacher, M., Nikiel, L., & Semaan, M. E. (2001, April). Positron annihilation lifetime spectroscopy of carbon black-and silica-filled rubber. In Materials Science Forum (Vol. 363, pp. 343-345). en_US
dc.author.email msemaan@lau.edu.lb
dc.identifier.url http://www.scientific.net/MSF.363-365.343

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