Photodegradation of polypropylene/polystyrene blends: Styrene-butadiene-styrene compatibilisation effect

dc.creatorWaldman, WR
dc.creatorDe Paoli, MA
dc.date2008
dc.dateJAN
dc.date2014-11-17T19:02:29Z
dc.date2015-11-26T17:41:48Z
dc.date2014-11-17T19:02:29Z
dc.date2015-11-26T17:41:48Z
dc.date.accessioned2018-03-29T00:23:38Z
dc.date.available2018-03-29T00:23:38Z
dc.identifierPolymer Degradation And Stability. Elsevier Sci Ltd, v. 93, n. 1, n. 273, n. 280, 2008.
dc.identifier0141-3910
dc.identifierWOS:000253305500033
dc.identifier10.1016/j.polymdegradstab.2007.09.003
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/59596
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/59596
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/59596
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1287117
dc.descriptionThe mutual influence between the PP/PS polymer blend components during UV photodegradation was studied. Polypropylene (PP) and polystyrene (PS) have different photodegradation mechanisms, due to the larger UV absorption of polystyrene and formation of more stable tertiary carbon radicals. To compare the stabilities the kinetics of carbonyl formation was measured in different blend compositions. The results show that polystyrene presented a faster carbonyl formation than polypropylene, while the blends display faster kinetics than the isolated components. The kinetics of carbonyl formation of the blends was a function of polypropylene content. This result is unexpected if one considers the behaviour of each component alone. The kinetics and mechanism of UV degradation can be only explained taking into account the interaction between the blend components. PS absorbs UV light and energy is transferred to PP, which produces more reactive tertiary carbon free radicals. The effect of the interaction between the domains is enhanced when a compatibiliser is used, corroborating the hypothesis of energy transfer. (c) 2007 Elsevier Ltd. All rights reserved.
dc.description93
dc.description1
dc.description273
dc.description280
dc.languageen
dc.publisherElsevier Sci Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationPolymer Degradation And Stability
dc.relationPolym. Degrad. Stabil.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectpolypropylene
dc.subjectpolystyrene
dc.subjectblend
dc.subjectcompatibilising agent
dc.subjectphotodegradation
dc.subjectLow-density Polyethylene
dc.subjectThermal-degradation
dc.subjectPolymer Blends
dc.subjectThermomechanical Degradation
dc.subjectPhotooxidation
dc.subjectPolystyrene
dc.subjectBehavior
dc.subjectCrystallization
dc.subjectPolycarbonate
dc.subjectIrradiation
dc.titlePhotodegradation of polypropylene/polystyrene blends: Styrene-butadiene-styrene compatibilisation effect
dc.typeArtículos de revistas


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