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Thermal Characteristics of TIO2 Nanocomposite in a Polyurethane Matrix Made with Castor Oil

Características térmicas de un nanocompuesto de TIO2 en una matriz de poliuretano elaborada con aceite de higuerilla

dc.contributor.authorGordillo Delgado, Fernando
dc.contributor.authorHernández Zarta, Hector Hernán
dc.date.accessioned2023-11-28T16:26:11Z
dc.date.available2023-11-28T16:26:11Z
dc.date.created2020-10-23
dc.identifier.issn1692-3324
dc.identifier.urihttp://hdl.handle.net/11407/8206
dc.descriptionNanocomposites are multiphase structures with at least one pase dimension of nanometric order size. Polymer-based materials mixed with low proportions of titanium dioxide nanoparticles (NPs-TiO2) are a versatile alternative in different industrial applications, considering the optimization of mechanical and thermal properties with respect to pure polymers and conventional materials. In this work, the synthesis and thermal characteristics measurement of a nanocomposite formed by anatase phase Nps-TiO2 of 5 nm particle size in a polyurethane matrix is reported. The polymeric matrix was obtained through the reaction between the self-condensation of castor oil and diphenylmethane diisocyanate (MDI), while sol-gel technique was used in the synthesis of NPs-TiO2, using titanium (IV)-bis(acetylacetonate) diisopropoxide as precursor. Specific heat (Cp) of the samples was measured by means of the thermal relaxation method and thermal diffusivity (α) was determined with the photoacoustic technique. Cp of the nanocomposite increased by 12.98 % due to addition of the NPs, while α decreased by 98.63 %, compared to corresponding values of the polyurethane matrix. With a concentration of 3 wt % of NPs-TiO2 in the matrix, these termal parameters were found below average values of conventional plastics.eng
dc.descriptionLos nanocompuestos son estructuras multifásicas con por lo menos una dimensión de una de las fases de tamaño de orden nanométrico. Los materiales de base polimérica, mezclados con bajas proporciones de nanopartículas de dióxido de titanio (Nps-TiO2), son una alternativa versátil en diferentes aplicaciones industriales, considerando la optimización de propiedades mecánicas y térmicas con respecto a polímeros puros y materiales convencionales. En este trabajo se reportan la síntesis y la medición de características térmicas de un nanocompuesto conformado por NPs-TiO2, fase anatasa de tamaño de partícula de 5 nm, en una matriz de poliuretano, elaborada con aceite de higuerilla. La matriz polimérica se obtuvo a través de la reacción entre la autocondensación del aceite de higuerilla y diisocianato de difenilmetano (MDI), mientras que en la síntesis de las NPs-TiO2 se usó la técnica sol-gel, utilizando como precursor titanio (IV)-bis(acetilacetonato) diisopropóxido. El calor específico (Cp) de las muestras fue medido por medio del método de relajación térmica y con la técnica fotoacústica se determinó la difusividad térmica (α). Con la adición de las NPs el Cp del nanocompuesto aumentó en 12.98 %, mientras que la α disminuyó en 98,63 %, en comparación con los correspondientes valores obtenidos para la matriz de poliuretano. Con una concentración del 3 % en peso de NPs-TiO2 en la matriz se encontraron parámetros térmicos por debajo de los valores promedio de los plásticos convencionales.spa
dc.formatPDF
dc.format.extentp. 147-165
dc.format.mediumElectrónico
dc.format.mimetypeapplication/pdf
dc.language.isospa
dc.publisherUniversidad de Medellín
dc.relation.ispartofseriesRevista Ingenierías Universidad de Medellín; Vol. 20 No. 39 (2021)
dc.relation.haspartRevista Ingenierías Universidad de Medellín; Vol. 20 Núm. 39 julio-diciembre 2021
dc.relation.urihttps://revistas.udem.edu.co/index.php/ingenierias/article/view/3263
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0*
dc.sourceRevista Ingenierías Universidad de Medellín; Vol. 20 No. 39 (2021): (julio-diciembre); 147-165
dc.subjectThermal conductivityeng
dc.subjectDiffusivityeng
dc.subjectEffusivenesseng
dc.subjectPhotoacousticeng
dc.subjectNanocompositoseng
dc.subjectPolymereng
dc.subjectThermal relaxationeng
dc.subjectConductividad térmicaspa
dc.subjectdifusividadspa
dc.subjectEfusividadspa
dc.subjectFotoacústicaspa
dc.subjectNanocompuestosspa
dc.subjectPolímerospa
dc.subjectRelajación térmicaspa
dc.titleThermal Characteristics of TIO2 Nanocomposite in a Polyurethane Matrix Made with Castor Oileng
dc.titleCaracterísticas térmicas de un nanocompuesto de TIO2 en una matriz de poliuretano elaborada con aceite de higuerillaspa
dc.typearticle
dc.identifier.doihttps://doi.org/10.22395/rium.v20n39a9
dc.relation.citationvolume20
dc.relation.citationissue39
dc.relation.citationstartpage147
dc.relation.citationendpage165
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-NoDerivatives 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
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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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