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Structure development during additive manufacturing

2013-10Comunicação em conferência Acesso restrito
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datacite.subject.fosEngenharia e Tecnologia
datacite.subject.sdg03:Saúde de Qualidade
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
datacite.subject.sdg12:Produção e Consumo Sustentáveis
dc.contributor.authorTojeira, A.
dc.contributor.authorBiscaia, S.
dc.contributor.authorViana, T.
dc.contributor.authorBártolo, P. J.
dc.contributor.authorMitchell, G. R.
dc.date.accessioned2026-06-19T16:23:54Z
dc.date.available2026-06-19T16:23:54Z
dc.date.issued2013-10
dc.descriptionConference date - 1 October 2013 - 5 October 2013; Conference code - 101946
dc.description.abstractAdditive manufacturing involves the shaping of a product through the use of a liquid phase which is subsequently transformed to the solid state by cooling or through the use of chemical cross-linking reactions. Of particular note is the fused deposition modeling which utilizes semi-crystalline polymers such as poly(ε-caprolactone) or poly(lactic acid) and has been employed in CDRsp to prepare highly porous scaffolds for Tissue Engineering. We show that the crystallization process amplifies small levels of molecular anisotropy introduced in the additive writing process. We show that the level of anisotropy is significantly dependent on the process parameters such as temperature, write speed, and flow rate. The differences in the crystalline morphology introduced by changing these process parameters will have a marked impact on the mechanical properties. This in turn will alter the growth of tissue on such scaffold structures. As with other polymer processing procedures, tuning the process parameters provides a route to controlling and defining the structure and morphology of the scaffold and the properties exhibited by that scaffold.eng
dc.description.sponsorshipThe authors would like to thank the European Synchrotron Radiation Facility (ESFR) in Grenoble, France, with special regards to the Beamline BM26B scientists, Guiseppe Portale and Daniel Hermida Merino.
dc.identifier.citationTojeira, A., Biscaia, S., Viana, T., Bártolo, P. J., & Mitchell, G. R. (2013). Structure development during additive manufacturing. High Value Manufacturing–VRAP.
dc.identifier.isbn978-113800137-4
dc.identifier.urihttp://hdl.handle.net/10400.8/16438
dc.language.isoeng
dc.peerreviewedyes
dc.publisherTaylor and Francis
dc.relation.hasversionhttps://scholar.google.com/scholar?q=Structure%20development%20during%20additive%20manufacturing
dc.rights.uriN/A
dc.subject3D printers
dc.subjectAnisotropy
dc.subjectCrosslinking
dc.subjectManufacture
dc.subjectMechanical properties
dc.subjectRapid prototyping
dc.subjectScaffolds (biology)
dc.titleStructure development during additive manufacturingeng
dc.typeconference paper
dspace.entity.typePublication
oaire.citation.conferenceDate2013-10
oaire.citation.conferencePlaceLeiria, Portugal
oaire.citation.titleHigh Value Manufacturing: Advanced Research in Virtual and Rapid Prototyping - Proceedings of the 6th International Conference on Advanced Research and Rapid Prototyping, VR@P 2013
oaire.versionhttp://purl.org/coar/version/c_ab4af688f83e57aa
person.familyNameTojeira
person.familyNameBiscaia
person.familyNameViana
person.familyNameBartolo
person.familyNameMitchell
person.givenNameAna
person.givenNameSara
person.givenNameTânia
person.givenNamePaulo
person.givenNameGeoffrey
person.identifier203086
person.identifier166356
person.identifier.ciencia-id0516-3C03-93F3
person.identifier.ciencia-idB41D-8BE0-7C9D
person.identifier.ciencia-id5810-9BF9-4522
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person.identifier.orcid0000-0001-7155-7349
person.identifier.orcid0000-0002-2609-6878
person.identifier.orcid0000-0002-9688-647X
person.identifier.orcid0000-0003-3683-726X
person.identifier.orcid0000-0001-7977-7610
person.identifier.ridO-1146-2013
person.identifier.ridO-1147-2013
person.identifier.ridF-2421-2013
person.identifier.scopus-author-id54895126200
person.identifier.scopus-author-id55867382400
person.identifier.scopus-author-id55885892100
person.identifier.scopus-author-id6603353041
person.identifier.scopus-author-id7403103397
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Additive manufacturing involves the shaping of a product through the use of a liquid phase which is subsequently transformed to the solid state by cooling or through the use of chemical cross-linking reactions. Of particular note is the fused deposition modeling which utilizes semi-crystalline polymers such as poly(ε-caprolactone) or poly(lactic acid) and has been employed in CDRsp to prepare highly porous scaffolds for Tissue Engineering. We show that the crystallization process amplifies small levels of molecular anisotropy introduced in the additive writing process. We show that the level of anisotropy is significantly dependent on the process parameters such as temperature, write speed, and flow rate. The differences in the crystalline morphology introduced by changing these process parameters will have a marked impact on the mechanical properties. This in turn will alter the growth of tissue on such scaffold structures. As with other polymer processing procedures, tuning the process parameters provides a route to controlling and defining the structure and morphology of the scaffold and the properties exhibited by that scaffold.
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