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Cambios en la estructura química del polietileno de alta densidad al experimentar múltiples reprocesamientos

Changes in the Chemical Structure of High-Density Polyethylene when Undergoing Multiple Reprocessing;
Mudanças na estrutura química do polietileno de alta densidade ao experimentar múltiplos reprocessamentos

dc.contributor.authorCárdenas-Giraldo, Juan Manuel
dc.contributor.authorRojas-González, Andrés Felipe
dc.contributor.authorGalviz-Garcia, Beatriz Clemencia
dc.date.accessioned2021-10-04T20:55:53Z
dc.date.available2021-10-04T20:55:53Z
dc.date.created2019-12-01
dc.identifier.issn1692-3324
dc.identifier.urihttp://hdl.handle.net/11407/6517
dc.descriptionEn este artículo, que presenta los resultados originales de una investigación financiada por Colciencias y la Facultad de Ingeniería y Arquitectura de la Universidad Nacional de Colombia, sede Manizales, se identifican los cambios en la estructura química del polietileno de alta densidad grado extrusión y grado inyección después de ser sometidos a cinco reprocesamientos en procesos de extrusión, inyección y extrusión/inyección. La identificación de los cambios se realiza a través de la comparación del espectro FTIR con los reportados en diferentes referencias bibliográficas. Los espectros FTIR fueron obtenidos mediante un espectrómetro ATR Platinum. La degradación térmica fue mayor en el proceso de extrusión/inyección, seguido por inyección, extrusión, extrusión a 80 rpm y extrusión a 20 rpm. Se concluye que existe una baja degradación del polietileno de alta densidad después de ser reprocesado en cinco ciclos, se evidencia así la aparición del grupo carbonilo, grupos vinilo y grupo COC.
dc.descriptionIn this paper, which presents the original results of a research funded by Colciencias and Facultad de Ingeniería y Arquitectura from the Universidad Nacional de Colombia, headquarters Manizales, publishes the changes of high-density polyethylene extrusion and injection grade identified after being subjected to five reprocessing processes in extrusion, injection and extrusion/injection. The identification of the changes is made through the comparison of the FTIR spectrum with those reported in different bibliographical references. The spectra were obtained by means of a Platinum ATR spectrometer. The thermal degradation was greater in the extrusion/injection process, followed by injection, extrusion at 80 rpm and extrusion at 20 rpm. It is concluded that there is a low degradation of high-density polyethylene after being reprocessed in five cycles, evidencing the appearance of the carbonyl group, vinyl groups and COC group.
dc.descriptionNeste artigo, que apresenta os resultados originais de uma pesquisa financiada por Colciencias e pela Faculdade de Engenharia e Arquitetura da Universidad Nacional de Colombia, sede Manizales, são identificadas as mudanças na estrutura química do polietileno de alta densidade grau extrusão e grau injeção depois de serem submetidos a cinco reprocessamentos em processos de extrusão, injeção e extrusão/injeção. A identificação das mudanças é realizada por meio da comparação do espectro FTIR com o que foi relatado em diferentes referências bibliográficas. Os espectros FTIR foram obtidos por meio de um espectrômetro ATR Platinum. A degradação térmica foi maior no processo de extrusão/injeção, seguido por injeção, extrusão, extrusão a 80 rpm e extrusão a 20 rpm. Conclui-se que existe uma baixa degradação do polietileno de alta densidade depois de ser reprocessado em cinco ciclos, assim fica evidente o surgimento do grupo carbonila, grupos vinilo e grupo COC.
dc.formatPDF
dc.format.extentp. 111-124
dc.format.mediumElectrónico
dc.format.mimetypeapplication/pdf
dc.language.isospa
dc.publisherUniversidad de Medellín
dc.relation.ispartofseriesRevista Ingenierías Universidad de Medellín; Vol. 18 Núm. 35 (2019)
dc.relation.haspartRevista Ingenierías Universidad de Medellín; Vol. 18 Núm. 35 julio-diciembre 2019
dc.relation.urihttps://revistas.udem.edu.co/index.php/ingenierias/article/view/2235
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0
dc.sourceRevista Ingenierías Universidad de Medellín; Vol. 18 Núm. 35 (2019): julio-diciembre; 111-124
dc.subjectDegradación térmica
dc.subjectFTIR
dc.subjectReprocesamiento en inyección
dc.subjectReprocesamiento en extrusión
dc.subjectPolietileno de alta densidad
dc.subjectThermal degradation
dc.subjectFTIR
dc.subjectInjection reprocessing
dc.subjectExtrusion reprocessing
dc.subjectHigh-density polyethylene
dc.subjectDegradação térmica
dc.subjectFTIR
dc.subjectReprocessamento em injeção
dc.subjectReprocessamento em extrusão
dc.subjectPolietileno de alta densidade
dc.titleCambios en la estructura química del polietileno de alta densidad al experimentar múltiples reprocesamientos
dc.titleChanges in the Chemical Structure of High-Density Polyethylene when Undergoing Multiple Reprocessing
dc.titleMudanças na estrutura química do polietileno de alta densidade ao experimentar múltiplos reprocessamentos
dc.typeArticle
dc.identifier.doihttps://doi.org/10.22395/rium.v18n35a7
dc.relation.citationvolume18
dc.relation.citationissue35
dc.relation.citationstartpage111
dc.relation.citationendpage124
dc.audienceComunidad Universidad de Medellín
dc.publisher.facultyFacultad de Ingenierías
dc.coverageLat: 06 15 00 N degrees minutes Lat: 6.2500 decimal degreesLong: 075 36 00 W degrees minutes Long: -75.6000 decimal degrees
dc.publisher.placeMedellín
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dc.rights.creativecommonsAttribution-NonCommercial-ShareAlike 4.0 International
dc.identifier.eissn2248-4094
dc.type.coarhttp://purl.org/coar/resource_type/c_6501
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.type.localArtículo científico
dc.type.driverinfo:eu-repo/semantics/article
dc.identifier.reponamereponame:Repositorio Institucional Universidad de Medellín
dc.identifier.repourlrepourl:https://repository.udem.edu.co/
dc.identifier.instnameinstname:Universidad de Medellín


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