PA6/PA66/talc composite: Effect of reprocessing on the structure and properties

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dc.contributor.authorDOMINGO, G. D.
dc.contributor.authorSOUZA, A. M. C.
dc.date.accessioned2022-01-16T18:59:11Z
dc.date.available2022-01-16T18:59:11Z
dc.date.issued2022-04-05
dc.description.abstractIn this study the effect of repeated injection molding cycles on the structure and properties of polyamide 6/polyamide 66/talc (PA6/PA66/talc - 35/35/30) composite was investigated for samples subjected to one, four, and seven processing cycles. Their morphology (scanning electron microscopy), structure (Fourier transform infrared spectroscopy), melt viscosity (melt flow index [MFI]), mechanical (tensile, flexural, impact, and fatigue tests), and thermal properties (differential scanning calorimetry and thermogravimetric analysis tests) were analyzed. The increase in MFI value and the decrease in the maximum decomposition temperature of PA6, observed by TG analysis, for samples subjected to seven processing cycles, indicated a possible reduction in molar mass of the PA6/PA66 matrix. These samples presented a decrease in degree of crystallinity of PA6 and PA66, which was more pronounced for PA6. The reprocessing of the composite did not present changes in the mechanical properties up to the fourth processing cycle, except for fatigue life which presented a 59% reduction. Samples subjected to seven processing cycles presented a decrease in tensile and flexural strength as well as in tensile and flexural modulus. Charpy impact strength of the samples did not significantly change upon reprocessing. The micrographs of the fatigue fractured surfaces indicated that the weak talc-matrix interaction and talc-matrix debonding became more evident with increasing processing cycles.
dc.identifier.citationDOMINGO, G. D.; SOUZA, A. M. C. PA6/PA66/talc composite: Effect of reprocessing on the structure and properties. Journal of Applied Polymer Science, v. 139, n.13, Apr. 2022.
dc.identifier.doi10.1002/app.51869
dc.identifier.issn1097-4628
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/4395
dc.relation.ispartofJournal of Applied Polymer Science
dc.rightsAcesso Restrito
dc.subject.otherlanguagecomposites
dc.subject.otherlanguagemechanical properties
dc.subject.otherlanguagerecycling
dc.subject.otherlanguagestructure-property relationships
dc.subject.otherlanguagethermal properties
dc.titlePA6/PA66/talc composite: Effect of reprocessing on the structure and properties
dc.typeArtigo
fei.scopus.citations1
fei.scopus.eid2-s2.0-85118540586
fei.scopus.subject% reductions
fei.scopus.subjectmatrix
fei.scopus.subjectMelt viscosities
fei.scopus.subjectMelt-flow index
fei.scopus.subjectMolding cycles
fei.scopus.subjectPolyamide 6
fei.scopus.subjectPolyamide 66
fei.scopus.subjectProcessing cycles
fei.scopus.subjectStructure-properties relationships
fei.scopus.subjectStructures and properties
fei.scopus.updated2024-05-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85118540586&origin=inward
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