Assessment of the utilization of different peroxide dispersion media on the controlled degradation of polypropylene

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dc.contributor.authorMUNOZ, P. A. R.
dc.contributor.authorBETTINI, S. H. P.
dc.date.accessioned2022-01-12T22:01:39Z
dc.date.available2022-01-12T22:01:39Z
dc.date.issued2013-01-05
dc.description.abstractA two-step investigation of polypropylene-controlled degradation was performed. First the controlled degradation of polypropylene was investigated by assessing the effects of using dicumyl peroxide (DCP) and 2,5-dimethyl-2,5- di(t-butylperoxy) hexane (DHBP) in different suspensions (neat, calcium carbonate, and organically modified montmorillonite). The second part of this research was performed according to a factorial design at two levels (2 2 experimental design) with center point, in which peroxide concentration and reaction time were studied. Polypropylene degradation was assessed by melt flow rate (MFR) and parallel plate rheometry. Results showed that DCP presented higher molar efficiency in polypropylene degradation reactions in relation to DHBP; likely due to radical recombination reactions. The results also indicate that clay may catalyze the recombination reactions of polypropylene radicals. Copyright © 2012 Wiley Periodicals, Inc.
dc.description.firstpage87
dc.description.issuenumber1
dc.description.lastpage95
dc.description.volume127
dc.identifier.citationMUNOZ, P. A. R.; BETTINI, S. H. P. Assessment of the utilization of different peroxide dispersion media on the controlled degradation of polypropylene. Journal of Applied Polymer Science, v. 127, n. 1, p. 87- 95, Jan. 2013.
dc.identifier.doi10.1002/app.36705
dc.identifier.issn0021-8995
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/4082
dc.relation.ispartofJournal of Applied Polymer Science
dc.rightsAcesso Restrito
dc.subject.otherlanguagecatalysis
dc.subject.otherlanguagecontrolled degradation
dc.subject.otherlanguagenanoparticles
dc.subject.otherlanguagepolypropylene
dc.subject.otherlanguagereactive processing
dc.titleAssessment of the utilization of different peroxide dispersion media on the controlled degradation of polypropylene
dc.typeArtigo
fei.scopus.citations8
fei.scopus.eid2-s2.0-84867467316
fei.scopus.subjectCenter points
fei.scopus.subjectControlled degradation
fei.scopus.subjectDicumyl peroxide
fei.scopus.subjectDispersion media
fei.scopus.subjectFactorial design
fei.scopus.subjectMelt flow rate
fei.scopus.subjectOrganically modified montmorillonite
fei.scopus.subjectParallel plates
fei.scopus.subjectPeroxide concentration
fei.scopus.subjectPolypropylene degradation
fei.scopus.subjectRadical recombination reactions
fei.scopus.subjectReactive processing
fei.scopus.subjectRecombination reactions
fei.scopus.subjectRheometry
fei.scopus.updated2024-05-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84867467316&origin=inward
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