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Study on the influence of electron beam irradiation on the thermal, mechanical, and rheological properties of ethylene-octene copolymer with high comonomer content

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dc.title Study on the influence of electron beam irradiation on the thermal, mechanical, and rheological properties of ethylene-octene copolymer with high comonomer content en
dc.contributor.author Poongavalappil, Sameepa
dc.contributor.author Svoboda, Petr
dc.contributor.author Theravalappil, Rajesh
dc.contributor.author Svobodová, Dagmar
dc.contributor.author Daněk, Michal
dc.contributor.author Zatloukal, Martin
dc.relation.ispartof Journal of Applied Polymer Science
dc.identifier.issn 0021-8995 OCLC, Ulrich, Sherpa/RoMEO, JCR
dc.date.issued 2013
utb.relation.volume 128
utb.relation.issue 5
dc.citation.spage 3026
dc.citation.epage 3033
dc.type article
dc.language.iso en
dc.publisher John Wiley & Sons, Inc. en
dc.identifier.doi 10.1002/app.38479
dc.relation.uri http://onlinelibrary.wiley.com/doi/10.1002/app.38479/pdf
dc.subject crosslinking en
dc.subject mechanical properties en
dc.subject rheology en
dc.description.abstract Ethylene-octene copolymer (EOC) was irradiated using electron beam irradiation at different dosages (30, 60, 90, and 120 kGy). Effect of irradiation dosage on thermal and mechanical properties was studied. When compared to low density polyethylene, EOC exhibited higher degree of crosslinking reflected in increased gel content, higher elastic modulus (G′), and lower tan δ obtained by rheology measurement at 150°C. Crosslinking caused improvement in high-temperature creep and room temperature and also elevated temperature elastic properties. Differential scanning calorimetry revealed that e-beam irradiation has caused a gradual reduction in crystallinity and a presence of a fraction with higher melting temperature. In the case of EOC, as the extent of crosslinking increased, stress at break showed an increasing trend whereas irradiation dosage had an inverse effect on elongation at break. Radiation dosage has positive effect on thermal stability estimated by thermogravimetric analysis. After 30 min of thermal degradation at 220°C, slightly higher C=O peak for crosslinked sample was found by Fourier transform infrared spectroscopy while for room temperature samples no C=O peak was detected. © 2012 Wiley Periodicals, Inc. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1003166
utb.identifier.obdid 43870130
utb.identifier.scopus 2-s2.0-84874938710
utb.identifier.wok 000315910500055
utb.identifier.coden JAPNA
utb.source j-scopus
dc.date.accessioned 2013-04-05T08:19:43Z
dc.date.available 2013-04-05T08:19:43Z
utb.contributor.internalauthor Poongavalappil, Sameepa
utb.contributor.internalauthor Svoboda, Petr
utb.contributor.internalauthor Theravalappil, Rajesh
utb.contributor.internalauthor Svobodová, Dagmar
utb.contributor.internalauthor Daněk, Michal
utb.contributor.internalauthor Zatloukal, Martin
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