Evaluation of crystallization kinetics of poly (ether-ketone-ketone) and poly (ether-ether-ketone) by DSC

dc.contributor.authorVasconcelos, Gibran Da Cunha
dc.contributor.authorMazur, Rogerio Lago
dc.contributor.authorBotelho, Edson Cocchieri
dc.contributor.authorRezende, Mirabel Cerqueira
dc.contributor.authorCosta, Michelle Leali
dc.contributor.institutionUniv. Estadual Paulista
dc.contributor.institutionInstitute of Aeronautics and Space
dc.date.accessioned2021-07-14T10:35:51Z
dc.date.available2021-07-14T10:35:51Z
dc.date.issued2010
dc.description.abstractThe poly (aryl ether ketones) are used as matrices in advanced composites with high performance due to its high thermal stability, excellent environmental performance and superior mechanical properties. Most of the physical, mechanical and thermodynamic properties of semi-crystalline polymers depend on the degree of crystallinity and morphology of the crystalline regions. Thus, a study on the crystallization process promotes a good prediction of how the manufacturing parameters affect the developed structure, and the properties of the final product. The objective of this work was to evaluate the thermoplastics polymers PEKK e PEEK by DSC, aiming to obtain the relationship between kinetics, content, nucleation and geometry of the crystalline phases, according to the parameters of the Avrami and Kissinger models. The analysis of the Avrami exponents obtained for the studied polymers indicates that both showed the formation of crystalline phases with heterogeneous nucleation and growth geometry of the type sticks or discs, depending on the cooling conditions. It was also found that the PEEK has a higher crystallinity than PEKK.en
dc.description.affiliationUniv. Estadual Paulista
dc.description.affiliationInstitute of Aeronautics and Space
dc.format.extent155-162
dc.identifierhttp://dx.doi.org/10.5028/jatm.2010.02026310
dc.identifier.citationJournal of Aerospace Technology and Management. Departamento de Ciência e Tecnologia Aeroespacial, v. 2, n. 2, p. 155-162, 2010.
dc.identifier.doi10.5028/jatm.2010.02026310
dc.identifier.fileS2175-91462010000200155.pdf
dc.identifier.issn1984-9648
dc.identifier.issn2175-9146
dc.identifier.scieloS2175-91462010000200155
dc.identifier.urihttp://hdl.handle.net/11449/212174
dc.language.isoeng
dc.publisherDepartamento de Ciência e Tecnologia Aeroespacial
dc.relation.ispartofJournal of Aerospace Technology and Management
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectCrystallinityen
dc.subjectPEKKen
dc.subjectPEEKen
dc.subjectDSCen
dc.titleEvaluation of crystallization kinetics of poly (ether-ketone-ketone) and poly (ether-ether-ketone) by DSCen
dc.typeArtigo

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