Printability, Mechanical and Thermal Properties of Poly(3-Hydroxybutyrate)-Poly(Lactic Acid)-Plasticizer Blends for Three-Dimensional (3D) Printing

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dc.contributor.authorKontárová, Soňacs
dc.contributor.authorPřikryl, Radekcs
dc.contributor.authorMelčová, Veronikacs
dc.contributor.authorMenčík, Přemyslcs
dc.contributor.authorHorálek, Matyášcs
dc.contributor.authorFigalla, Silvestrcs
dc.contributor.authorPlavec, Roderikcs
dc.contributor.authorFeranc, Jozefcs
dc.contributor.authorSadílek, Jiřícs
dc.contributor.authorPospíšilová, Anetacs
dc.coverage.issue21cs
dc.coverage.volume13cs
dc.date.issued2020-10-23cs
dc.description.abstractThis paper investigates the effect of plasticizer structure on especially the printability and mechanical and thermal properties of poly(3-hydroxybutyrate)-poly(lactic acid)-plasticizer biodegradable blends. Three plasticizers, acetyl tris(2-ethylhexyl) citrate, tris(2-ethylhexyl) citrate, and poly(ethylene glycol)bis(2-ethylhexanoate), were first checked whether they were miscible with poly(3-hydroxybutyrate)-poly(lactic acid) (PHB-PLA) blends using a kneading machine. PHB-PLA-plasticizer blends of 60-25-15 (wt.%) were then prepared using a corotating meshing twin-screw extruder, and a single screw extruder was used for filament preparation for further three-dimensional (3D) fused deposition modeling (FDM) printing. These innovative eco-friendly PHB-PLA-plasticizer blends were created with a majority of PHB, and therefore, poor mechanical properties and thermal properties of neat PHB-PLA blends were improved by adding appropriate plasticizer. The plasticizer also influences the printability of blends, which was investigated, based on our new specific printability tests developed for the optimization of printing conditions (especially printing temperature). Three-dimensional printed test samples were used for heat deflection temperature measurements and Charpy and tensile-impact tests. Plasticizer migration was also investigated. The macrostructure of 3D printed samples was observed using an optical microscope to check the printing quality and printing conditions. Tensile tests of 3D printed samples (dogbones), as well as extruded filaments, showed that measured elongation at break raised, from 21% for non-plasticized PHB-PLA reference blends to 84% for some plasticized blends in the form of filaments and from 10% (reference) to 32% for plasticized blends in the form of printed dogbones. Measurements of thermal properties (using modulated differential scanning calorimetry and oscillation rheometry) also confirmed the plasticizing effect on blends. The thermal and mechanical properties of PHB-PLA blends were improved by the addition of appropriate plasticizer. In contrast, the printability of the PHB-PLA reference seems to be slightly better than the printability of the plasticized blends.en
dc.formattextcs
dc.format.extent1-27cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2020, vol. 13, issue 21, p. 1-27.en
dc.identifier.doi10.3390/ma13214736cs
dc.identifier.issn1996-1944cs
dc.identifier.orcid0000-0002-7525-9610cs
dc.identifier.orcid0000-0002-7811-9840cs
dc.identifier.orcid0000-0002-2124-6953cs
dc.identifier.orcid0000-0002-1914-8764cs
dc.identifier.orcid0000-0003-2392-8031cs
dc.identifier.other166288cs
dc.identifier.researcheridABD-2493-2020cs
dc.identifier.researcheridE-8210-2010cs
dc.identifier.researcheridABD-4360-2020cs
dc.identifier.scopus57204110910cs
dc.identifier.urihttp://hdl.handle.net/11012/195763
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/13/21/4736cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1944/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectplasticizersen
dc.subjectpoly(hydroxybutyrate)-poly(lactic)en
dc.subject3D printingen
dc.subjectprintabilityen
dc.subjectcitratesen
dc.subjectpoly(ethylene glycol) PEGen
dc.subjectbiodegradable polymeric blendsen
dc.titlePrintability, Mechanical and Thermal Properties of Poly(3-Hydroxybutyrate)-Poly(Lactic Acid)-Plasticizer Blends for Three-Dimensional (3D) Printingen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-166288en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:37:55en
sync.item.modts2025.01.17 18:39:03en
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Ústav chemie materiálůcs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé polymerní materiály a kompozitcs
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Centrum materiálového výzkumucs
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