Influence of the type of polypropylene on the photodegradation of blends of polypropylene/high impact polystyrene Estudo do Efeito do Tipo de Polipropileno na Fotodegradação da Blenda Polipropileno/Poliestireno de Alto Impacto

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dc.contributor.authorFernandes L.L.
dc.contributor.authorDe Freitas C.A.
dc.contributor.authorDemarquette N.R.
dc.contributor.authorFechine G.J.M.
dc.date.accessioned2024-03-13T01:08:04Z
dc.date.available2024-03-13T01:08:04Z
dc.date.issued2012
dc.description.abstractThe influence from the type of polypropylene on the photodegradation resistance of blends of polypropylene/high impact polystyrene (PP/HIPS) was studied. A virgin polypropylene (PPv) and another sample that suffered prior thermo-mechanical degradation (PPrep) were used. All materials, components of the blends and blends were exposed to UV radiation for up to 15 weeks. They were characterized as a function of time of UV exposure using differential scanning calorimetry (DSC), infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The mechanical (tensile and impact) properties and melt flow indexes of the materials were also evaluated. The experimental results revealed that PPv resin and its blends were more sensitive to UV radiation than PPrep and its blends. In terms of photostabilization this finding is very interesting, since PP/HIPS blends prepared with a previously degraded polyolefin would require smaller amounts of additives than the same kind of blends prepared with virgin resin.
dc.description.firstpage61
dc.description.issuenumber1
dc.description.lastpage68
dc.description.volume22
dc.identifier.doi10.1590/S0104-14282012005000013
dc.identifier.issn0104-1428
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/36808
dc.relation.ispartofPolimeros
dc.rightsAcesso Aberto
dc.subject.otherlanguageBlend
dc.subject.otherlanguageHigh impact polystyrene
dc.subject.otherlanguagePhotodegradation
dc.subject.otherlanguagePolypropylene
dc.titleInfluence of the type of polypropylene on the photodegradation of blends of polypropylene/high impact polystyrene Estudo do Efeito do Tipo de Polipropileno na Fotodegradação da Blenda Polipropileno/Poliestireno de Alto Impacto
dc.typeArtigo
local.scopus.citations9
local.scopus.eid2-s2.0-84860811489
local.scopus.subjectBlend
local.scopus.subjectFTIR
local.scopus.subjectFunction of time
local.scopus.subjectHigh impact polystyrene
local.scopus.subjectMelt flow
local.scopus.subjectPhotostabilization
local.scopus.subjectThermo-mechanical degradation
local.scopus.subjectUV exposure
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84860811489&origin=inward
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