Evaluation of the degradation effect on the processability of high molecular weight polypropylene

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dc.contributor.authorSHINZATO, RODRIGOpt_BR
dc.contributor.authorOTAGURO, HARUMIpt_BR
dc.contributor.authorLIMA, LUIS F.C.P.pt_BR
dc.contributor.authorPARRA, DUCLERC F.pt_BR
dc.contributor.authorARTEL, BEATRIZ W.H.pt_BR
dc.contributor.authorLUGAO, ADEMAR B.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 8th/ MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 15thpt_BR
dc.date.accessioned2014-11-17T18:34:39Zpt_BR
dc.date.accessioned2014-11-18T18:49:45Zpt_BR
dc.date.accessioned2015-04-01T20:42:02Z
dc.date.available2014-11-17T18:34:39Zpt_BR
dc.date.available2014-11-18T18:49:45Zpt_BR
dc.date.available2015-04-01T20:42:02Z
dc.date.eventoSept. 30 - Oct. 5, 2007pt_BR
dc.description.abstractOne way to improve the processability of high molecular weight and melt strength of Polypropylene (PP) is reducing its molecular weight by chain scission with increase of flow index. Nevertheless, the more significant occurrence of chain scission in its structure, further improved its processability is at expense of physical properties. It is well known that the high energy radiation creates free radicals in the polymer chains that subsequently stabilize forming structures. These structures composed by low molecular weight chains and by grafted, branched and crosslinked chains modify the physical and chemical properties of the polymer, depending of their distribution. The low molecular weight chains become from the degradation process by high energy irradiation, which decreases the melt strength and improves its processability. So, this work has the objective to evaluate the degradation of the high molecular weight PP using different irradiation doses. Two kinds of PP samples were utilized. The first one, without additive, presented a flow index of 1.9 g/10 min, and the second, additivated with 0.2 wt % of antioxidant phenolic, Irganox 1010, with a flow index of 0.9 g/10 min. These samples were irradiated with doses of 12.5 and 20.0 kGy. The results of flow index and melt strength obtained with these two kinds of samples showed the antioxidant and the radiation action.
dc.event.siglaINAC; ENAN; ENFIRpt_BR
dc.identifier.citationSHINZATO, RODRIGO; OTAGURO, HARUMI; LIMA, LUIS F.C.P.; PARRA, DUCLERC F.; ARTEL, BEATRIZ W.H.; LUGAO, ADEMAR B. Evaluation of the degradation effect on the processability of high molecular weight polypropylene. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 8th/ MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 15th, Sept. 30 - Oct. 5, 2007, Santos, SP. <b>Proceedings...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/17593.
dc.identifier.orcidhttps://orcid.org/0000-0002-1737-3191
dc.identifier.orcidhttps://orcid.org/0000-0002-7626-880X
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/17593pt_BR
dc.local.eventoSantos, SPpt_BR
dc.publisherSao Paulo: ABEN, 2007pt_BR
dc.rightsopenAccesspt_BR
dc.subjectpolypropylenept_BR
dc.subjectradiolysispt_BR
dc.subjectelongationpt_BR
dc.subjectpolymerizationpt_BR
dc.subjectgamma radiationpt_BR
dc.subjectradiation dosespt_BR
dc.subjectradiation effectspt_BR
dc.subjectmonomerspt_BR
dc.subjectmolecular weightpt_BR
dc.titleEvaluation of the degradation effect on the processability of high molecular weight polypropylenept_BR
dc.typeTexto completo de eventopt_BR
dspace.entity.typePublication
ipen.autorADEMAR BENEVOLO LUGAO
ipen.autorBEATRIZ WELTMAN HUTZLER
ipen.autorDUCLERC FERNANDES PARRA
ipen.autorLUIS FILIPE CARVALHO PEDROSO DE LIMA
ipen.autorHARUMI OTAGURO
ipen.autorRODRIGO SHINZATO
ipen.codigoautor339
ipen.codigoautor2182
ipen.codigoautor562
ipen.codigoautor1208
ipen.codigoautor3534
ipen.codigoautor5903
ipen.contributor.ipenauthorADEMAR BENEVOLO LUGAO
ipen.contributor.ipenauthorBEATRIZ WELTMAN HUTZLER
ipen.contributor.ipenauthorDUCLERC FERNANDES PARRA
ipen.contributor.ipenauthorLUIS FILIPE CARVALHO PEDROSO DE LIMA
ipen.contributor.ipenauthorHARUMI OTAGURO
ipen.contributor.ipenauthorRODRIGO SHINZATO
ipen.date.recebimento07-12pt_BR
ipen.event.datapadronizada2007pt_BR
ipen.identifier.ipendoc11979pt_BR
ipen.notas.internasProceedingspt_BR
ipen.type.genreArtigo
relation.isAuthorOfPublication99ac24c5-2ae1-465a-a6f2-40b4d9af6af7
relation.isAuthorOfPublication776edabd-740d-4e50-a633-44a27336e3e0
relation.isAuthorOfPublication67996d86-0a59-4ba2-8d38-facaa14e26c3
relation.isAuthorOfPublication6219076c-1af2-4aec-81db-794291f1d82d
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relation.isAuthorOfPublicationbda9c94e-b8d8-4336-9b13-a299f0e24829
relation.isAuthorOfPublication.latestForDiscoverybda9c94e-b8d8-4336-9b13-a299f0e24829
sigepi.autor.atividadeSHINZATO, RODRIGO:5903:37:Spt_BR
sigepi.autor.atividadeOTAGURO, HARUMI:3534:37:Npt_BR
sigepi.autor.atividadeLIMA, LUIS F.C.P.:1208:-1:Npt_BR
sigepi.autor.atividadePARRA, DUCLERC F.:562:37:Npt_BR
sigepi.autor.atividadeARTEL, BEATRIZ W.H.:2182:-1:Npt_BR
sigepi.autor.atividadeLUGAO, ADEMAR B.:339:37:Npt_BR
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