Thermal and mechanical properties of in situ polymerized PS/EPDM blends

dc.creatorLourenco, E
dc.creatorFelisberti, MI
dc.date2006
dc.dateOCT
dc.date2014-11-17T11:43:10Z
dc.date2015-11-26T16:42:37Z
dc.date2014-11-17T11:43:10Z
dc.date2015-11-26T16:42:37Z
dc.date.accessioned2018-03-28T23:27:15Z
dc.date.available2018-03-28T23:27:15Z
dc.identifierEuropean Polymer Journal. Pergamon-elsevier Science Ltd, v. 42, n. 10, n. 2632, n. 2645, 2006.
dc.identifier0014-3057
dc.identifierWOS:000241460100048
dc.identifier10.1016/j.eurpolymj.2006.06.022
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/57975
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/57975
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/57975
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1273321
dc.descriptionIn situ polymerized PS/EPDM blends were prepared by dissolving poly(ethylene-co-propylene-co-2-ethylidene-5-norbornene) (EPDM) in styrene monomer, followed by bulk polymerization at 60 degrees C and 80 degrees C. EPDM has excellent resistance to such factors as weather, ozone and oxidation, attributed to its non-conjugated diene component, and it could be a good alternative for substituting polybutadiene-based rubbers in PS toughening. The in situ polymerized blends were characterized by dynamic mechanical analysis, thermogravimetric analysis, gel permeation chromatography, and tensile and Izod impact resistance tests. The PS/EPDM blends are immiscible and present two phases, a dispersed elastomeric phase (EPDM) in a rigid PS matrix whose phase behavior is strongly affected by the polymerization temperature. Mechanical properties of the blends are influenced by the increase in the average size of EPDM domains with the increase in the polymerization temperature and EPDM content. The blends polymerized at 60 degrees C containing 5 wt% of EPDM presents an increase in the impact resistance of 80% and containing 17 wt% of EPDM presents an increase in the strain at break of 170% in comparison with the value of PS. The blend polymerized at 80 degrees C containing 17 wt% of EPDM presents an increase in the strain at break of 480% and in impact resistance of 140% in comparison with the value of PS. (c) 2006 Elsevier Ltd. All rights reserved.
dc.description42
dc.description10
dc.description2632
dc.description2645
dc.languageen
dc.publisherPergamon-elsevier Science Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationEuropean Polymer Journal
dc.relationEur. Polym. J.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectin situ polymerization
dc.subjectEPDM
dc.subjectpolystyrene
dc.subjectPS/EPDM blends
dc.subjectHigh-impact Polystyrene
dc.subjectDiene Epdm Rubber
dc.subjectGraft-copolymers
dc.subjectMolecular-weight
dc.subjectBlock-copolymer
dc.subjectCompatibilization
dc.subjectDegradation
dc.subjectMorphology
dc.subjectParticles
dc.subjectHips
dc.titleThermal and mechanical properties of in situ polymerized PS/EPDM blends
dc.typeArtículos de revistas


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