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dc.contributor.advisor
dc.contributor.authorGauss, Christianen_NZ
dc.contributor.authorPickering, Kim L.en_NZ
dc.date.accessioned2023-01-25T03:03:35Z
dc.date.available2023-01-25T03:03:35Z
dc.date.issued2023-01-05en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/15451
dc.description.abstractIn this work, a new methodology was developed to disperse nanofibrillated cellulose (CNF) in polylactic acid (PLA) composites for 3D printing. The nanofibres were modified by grafting PLA onto their surface through in-situ polymerisation of L-lactide. This modification changed subsequent fibre/PLA interaction and enabled the production of reinforced microparticles by a Pickering emulsion approach. We demonstrated that filaments produced with these microparticles containing up to 20 wt% of grafted CNF (g-CNF) can be processed and printed using the same printing parameters as used for neat PLA. The printed samples presented superior tensile properties, enhanced thermo-mechanical stability, and were dimensionally stable upon PLA crystallisation when g-CNF content is above 10 wt%. When heat-treated after printing the composite with 10 wt% of g-CNF achieved an ultimate tensile strength and Young's modulus of 72 MPa and 5.4 GPa, respectively. Post-printing annealing also increased thermo-mechanical stability of the composites achieving a storage modulus at 80 °C up to 850 times the storage modulus of neat PLA at the same temperature.en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.rightsThis is an author’s preprint version of an article published in Additive Manufacturing. © 2022 Elsevier B.V.
dc.titleA new method for producing polylactic acid biocomposites for 3D printing with improved tensile and thermo-mechanical performance using grafted nanofibrillated celluloseen_NZ
dc.typeJournal Article
dc.identifier.doi10.1016/j.addma.2022.103346en_NZ
dc.relation.isPartOfAdditive Manufacturingen_NZ
pubs.elements-id301872
pubs.publication-statusAccepteden_NZ
pubs.volume61en_NZ
dc.identifier.eissn2214-8604en_NZ


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