Obtenção de scaffolds poliméricos baseados em poli(ácido lático), hidroxiapatita e óxido de grafeno utilizando o método de manufatura aditiva por “fused deposition modeling”

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dc.contributor.advisorFechine, Guilhermino José Macêdo
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/8109533360196619por
dc.contributor.authorSiqueira, André da Silva
dc.creator.Latteshttp://lattes.cnpq.br/9521596887711227por
dc.date.accessioned2018-05-21T13:34:35Z
dc.date.accessioned2020-12-07T15:07:13Z
dc.date.available2020-12-07T15:07:13Z
dc.date.issued2018-02-06
dc.description.abstractThe present work aims to obtain and characterize a composite filament based on poly (lactic acid) (PLA), hydroxyapatite (HA) and graphene oxide, to process it by fused deposition modeling (FDM), and then make scaffolds for bone tissue growth and order to evaluate the properties of the obtained structure. To achieve these goals composite of PLA/HA, PLA/GO and PLA / HA / GO with concentrations of 0.05 wt %, 0.1 wt % and 0.3 wt % GO and 30 wt % HA were obtained by melt state blending and subsequently processed by FDM. The graphite oxide was obtained by modified Hummers method and characterized by X-ray diffraction (XRD), thermogravimetric analysis and Raman spectroscopy. The PLA and composites were characterized by molar mass measurements, infrared and Raman spectroscopy, tensile strength tests, contact angle measurements (surface energy), differential scanning calorimetry (DSC) and rheological tests. The insertion of GO into PLA and PLA/HA composites led to improvements in the mechanical properties (tensile) and also modified significantly the surface properties of the materials and the composition with 0.05 wt % of GO has shown the better results in both characteristics. These improvements occurred due to the strong interaction of the GO sheets with the PLA matrix that indicates the process of obtaining the composites via the melting state was correctly conducted. All PLA / HA / GO compositions presented rheological characteristics compatible with of scaffolds production process via FDM. The insertion of the GO into the PLA matrix and the PLA / HA composite has been shown to be extremely promising, and possibly to increase the variety of PLA / HA based biomaterials application.eng
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superiorpor
dc.formatapplication/pdf*
dc.identifier.citationSIQUEIRA, André da Silva. Obtenção de scaffolds poliméricos baseados em poli(ácido lático), hidroxiapatita e óxido de grafeno utilizando o método de manufatura aditiva por “fused deposition modeling”. 2018. 104 f. Dissertação( Engenharia de Materiais) - Universidade Presbiteriana Mackenzie, São Paulo.por
dc.identifier.urihttp://dspace.mackenzie.br/handle/10899/26500
dc.keywordspoly (lactic acid)eng
dc.keywordshydroxyapatiteeng
dc.keywordsgraphene oxideeng
dc.keywordsfused deposition modelingeng
dc.keywordsscaffoldeng
dc.languageporpor
dc.publisherUniversidade Presbiteriana Mackenziepor
dc.rightsAcesso Abertopor
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectpoli(ácido lático)por
dc.subjecthidroxiapatitapor
dc.subjectóxido de grafenopor
dc.subjectfused deposition modelingpor
dc.subjectscaffoldpor
dc.subject.cnpqCNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICApor
dc.subject.cnpqCNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA ORGANICA::SINTESE ORGANICApor
dc.subject.cnpqCNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA ORGANICA::POLIMEROS E COLOIDESpor
dc.subject.cnpqCNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA::FISICO-QUIMICA::CINETICA QUIMICA E CATALISEpor
dc.subject.cnpqCNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA INORGANICA::COMPOSTOS ORGANO-METALICOSpor
dc.thumbnail.urlhttp://tede.mackenzie.br/jspui/retrieve/16619/Andr%c3%a9%20da%20Silva%20Siqueira.pdf.jpg*
dc.titleObtenção de scaffolds poliméricos baseados em poli(ácido lático), hidroxiapatita e óxido de grafeno utilizando o método de manufatura aditiva por “fused deposition modeling”por
dc.typeDissertaçãopor
local.contributor.board1Carastan, Danilo Justino
local.contributor.board1Latteshttp://lattes.cnpq.br/7462836318959519por
local.contributor.board2Donato, Ricardo Keitel
local.contributor.board2Latteshttp://lattes.cnpq.br/4933879102244479por
local.publisher.countryBrasilpor
local.publisher.departmentEscola de Engenharia Mackenzie (EE)por
local.publisher.initialsUPMpor
local.publisher.programEngenharia de Materiaispor
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