Fused Filament Fabrication 3D printed polypropylene/ alumina nanocomposites: Effect of filler loading on the mechanical reinforcement

Three-dimensional (3D) printed Polypropylene (PP) reinforced with aluminum oxide (Al2O3) nanoparticles (NPs) were developed and fully characterized in this study. Nanocomposite filaments were produced initially following a melt mixing extrusion process, utillised as feedstock for the Fused Filament...

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Main Authors: Nectarios Vidakis, Markos Petousis, Emanuel Velidakis, Nikolaos Mountakis, Peder Erik Fischer-Griffiths, Sotirios A. Grammatikos, Lazaros Tzounis
Format: Article
Language:English
Published: Elsevier 2022-05-01
Series:Polymer Testing
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0142941822000708
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author Nectarios Vidakis
Markos Petousis
Emanuel Velidakis
Nikolaos Mountakis
Peder Erik Fischer-Griffiths
Sotirios A. Grammatikos
Lazaros Tzounis
author_facet Nectarios Vidakis
Markos Petousis
Emanuel Velidakis
Nikolaos Mountakis
Peder Erik Fischer-Griffiths
Sotirios A. Grammatikos
Lazaros Tzounis
author_sort Nectarios Vidakis
collection DOAJ
description Three-dimensional (3D) printed Polypropylene (PP) reinforced with aluminum oxide (Al2O3) nanoparticles (NPs) were developed and fully characterized in this study. Nanocomposite filaments were produced initially following a melt mixing extrusion process, utillised as feedstock for the Fused Filament Fabrication (FFF) specimen manufacturing. Al2O3 NPs at 0.5, 1.0, 2.0 and 4.0 wt% loadings were melt-mixed with the PP thermoplastic matrix. Specific geometry samples were 3D printed and analysed via tensile, flexural, viscoelastic, impact, microhardness and fractographic investigations. Raman spectroscopy verified the polymeric structure and the incorporated Al2O3 NPs within the polymer matrix. Atomic Force Microscopy (AFM) of the extruded filaments revealed the nanoscale roughness induced by the alumina nanoinclusions. All 3D printed nanocomposite structures exhibited enhanced tensile, flexural and thermomechanical properties. Specifically, the best combination was found for the 1.0 wt% loaded specimen showing a tensile and flexural strength increase by approx. 4% and 19%, respectively, with a concomitant slight increase in impact and microhardness properties compared to unfilled PP. Dynamic Mechanical Analysis (DMA) revealed a stiffening mechanism for the PP/Al2O3 nanocomposites being in good agreement with the quasi-static mechanical tests. It could be envisaged that the 3D printed PP/Al2O3 nanocomposites developed herein could find numerous applications as engineered thermoplastics, where enhanced material's static and dynamic mechanical properties are required.
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spelling doaj.art-418cf4edb95c4c4fb146a9316460e46d2022-12-21T23:40:54ZengElsevierPolymer Testing0142-94182022-05-01109107545Fused Filament Fabrication 3D printed polypropylene/ alumina nanocomposites: Effect of filler loading on the mechanical reinforcementNectarios Vidakis0Markos Petousis1Emanuel Velidakis2Nikolaos Mountakis3Peder Erik Fischer-Griffiths4Sotirios A. Grammatikos5Lazaros Tzounis6Mechanical Engineering Department, Hellenic Mediterranean University, Estavromenos, 71004, Heraklion, Crete, Greece; Institute of Emerging Technologies (i-EMERGE) of HMU Research Center, Heraklion, 71410, Crete, GreeceMechanical Engineering Department, Hellenic Mediterranean University, Estavromenos, 71004, Heraklion, Crete, Greece; Institute of Emerging Technologies (i-EMERGE) of HMU Research Center, Heraklion, 71410, Crete, Greece; Corresponding author. Mechanical Engineering Department, Hellenic Mediterranean University, Estavromenos, 71004, Heraklion, Crete, Greece.Mechanical Engineering Department, Hellenic Mediterranean University, Estavromenos, 71004, Heraklion, Crete, Greece; Institute of Emerging Technologies (i-EMERGE) of HMU Research Center, Heraklion, 71410, Crete, GreeceMechanical Engineering Department, Hellenic Mediterranean University, Estavromenos, 71004, Heraklion, Crete, Greece; Institute of Emerging Technologies (i-EMERGE) of HMU Research Center, Heraklion, 71410, Crete, GreeceLaboratory of Advanced & Sustainable Engineering Materials (ASEMlab), Department of Manufacturing & Civil Engineering, NTNU-Norwegian University of Science and Technology, Building B’, Teknologivegen 22, 2815, Gjøvik, NorwayLaboratory of Advanced & Sustainable Engineering Materials (ASEMlab), Department of Manufacturing & Civil Engineering, NTNU-Norwegian University of Science and Technology, Building B’, Teknologivegen 22, 2815, Gjøvik, Norway; Corresponding author. Laboratory of Advanced & Sustainable Engineering Materials (ASEMlab), Department of Manufacturing & Civil Engineering, NTNU-Norwegian University of Science and Technology, Building B’, Teknologivegen 22, 2815, Gjøvik, Norway.Mechanical Engineering Department, Hellenic Mediterranean University, Estavromenos, 71004, Heraklion, Crete, Greece; Institute of Emerging Technologies (i-EMERGE) of HMU Research Center, Heraklion, 71410, Crete, Greece; Department of Materials Science and Engineering, University of Ioannina, Ioannina, 45110, Greece; Corresponding author. Mechanical Engineering Department, Hellenic Mediterranean University, Estavromenos, 71004, Heraklion, Crete, Greece.Three-dimensional (3D) printed Polypropylene (PP) reinforced with aluminum oxide (Al2O3) nanoparticles (NPs) were developed and fully characterized in this study. Nanocomposite filaments were produced initially following a melt mixing extrusion process, utillised as feedstock for the Fused Filament Fabrication (FFF) specimen manufacturing. Al2O3 NPs at 0.5, 1.0, 2.0 and 4.0 wt% loadings were melt-mixed with the PP thermoplastic matrix. Specific geometry samples were 3D printed and analysed via tensile, flexural, viscoelastic, impact, microhardness and fractographic investigations. Raman spectroscopy verified the polymeric structure and the incorporated Al2O3 NPs within the polymer matrix. Atomic Force Microscopy (AFM) of the extruded filaments revealed the nanoscale roughness induced by the alumina nanoinclusions. All 3D printed nanocomposite structures exhibited enhanced tensile, flexural and thermomechanical properties. Specifically, the best combination was found for the 1.0 wt% loaded specimen showing a tensile and flexural strength increase by approx. 4% and 19%, respectively, with a concomitant slight increase in impact and microhardness properties compared to unfilled PP. Dynamic Mechanical Analysis (DMA) revealed a stiffening mechanism for the PP/Al2O3 nanocomposites being in good agreement with the quasi-static mechanical tests. It could be envisaged that the 3D printed PP/Al2O3 nanocomposites developed herein could find numerous applications as engineered thermoplastics, where enhanced material's static and dynamic mechanical properties are required.http://www.sciencedirect.com/science/article/pii/S0142941822000708Fused filament fabrication (FFF)Three-dimensional (3D) printingPolypropylene (PP)Aluminum oxide (Al2O3)Nanocomposites
spellingShingle Nectarios Vidakis
Markos Petousis
Emanuel Velidakis
Nikolaos Mountakis
Peder Erik Fischer-Griffiths
Sotirios A. Grammatikos
Lazaros Tzounis
Fused Filament Fabrication 3D printed polypropylene/ alumina nanocomposites: Effect of filler loading on the mechanical reinforcement
Polymer Testing
Fused filament fabrication (FFF)
Three-dimensional (3D) printing
Polypropylene (PP)
Aluminum oxide (Al2O3)
Nanocomposites
title Fused Filament Fabrication 3D printed polypropylene/ alumina nanocomposites: Effect of filler loading on the mechanical reinforcement
title_full Fused Filament Fabrication 3D printed polypropylene/ alumina nanocomposites: Effect of filler loading on the mechanical reinforcement
title_fullStr Fused Filament Fabrication 3D printed polypropylene/ alumina nanocomposites: Effect of filler loading on the mechanical reinforcement
title_full_unstemmed Fused Filament Fabrication 3D printed polypropylene/ alumina nanocomposites: Effect of filler loading on the mechanical reinforcement
title_short Fused Filament Fabrication 3D printed polypropylene/ alumina nanocomposites: Effect of filler loading on the mechanical reinforcement
title_sort fused filament fabrication 3d printed polypropylene alumina nanocomposites effect of filler loading on the mechanical reinforcement
topic Fused filament fabrication (FFF)
Three-dimensional (3D) printing
Polypropylene (PP)
Aluminum oxide (Al2O3)
Nanocomposites
url http://www.sciencedirect.com/science/article/pii/S0142941822000708
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