Polyamide 12/Multiwalled Carbon Nanotube and Carbon Black Nanocomposites Manufactured by 3D Printing Fused Filament Fabrication: A Comparison of the Electrical, Thermoelectric, and Mechanical Properties
In this study, nanocomposites with polyamide 12 (PA12) as the polymer matrix and multiwalled carbon nanotubes (MWCNTs) and carbon black (CB) at different loadings (2.5, 5.0, and 10.0 wt.%) as fillers, were produced in 3D printing filament form by melt mixing extrusion process. The filament was then...
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| Format: | Article |
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MDPI AG
2021-04-01
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| Online Access: | https://www.mdpi.com/2311-5629/7/2/38 |
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| author | Nectarios Vidakis Markos Petousis Lazaros Tzounis Emmanuel Velidakis Nikolaos Mountakis Sotirios A. Grammatikos |
| author_facet | Nectarios Vidakis Markos Petousis Lazaros Tzounis Emmanuel Velidakis Nikolaos Mountakis Sotirios A. Grammatikos |
| author_sort | Nectarios Vidakis |
| collection | DOAJ |
| description | In this study, nanocomposites with polyamide 12 (PA12) as the polymer matrix and multiwalled carbon nanotubes (MWCNTs) and carbon black (CB) at different loadings (2.5, 5.0, and 10.0 wt.%) as fillers, were produced in 3D printing filament form by melt mixing extrusion process. The filament was then used to build specimens with the fused filament fabrication (FFF) three-dimensional (3D) printing process. The aim was to produce by FFF 3D printing, electrically conductive and thermoelectric functional specimens with enhanced mechanical properties. All nanocomposites’ samples were electrically conductive at filler loadings above the electrical percolation threshold. The highest thermoelectric performance was obtained for the PA12/CNT nanocomposite at 10.0 wt.%. The static tensile and flexural mechanical properties, as well as the Charpy’s impact and Vickers microhardness, were determined. The highest improvement in mechanical properties was observed for the PA12/CNT nanocomposites at 5.0 wt.% filler loading. The fracture mechanisms were identified by fractographic analyses of scanning electron microscopy (SEM) images acquired from fractured surfaces of tensile tested specimens. The nanocomposites produced could find a variety of applications such as; 3D-printed organic thermoelectric materials for plausible large-scale thermal energy harvesting applications, resistors for flexible circuitry, and piezoresistive sensors for strain sensing. |
| first_indexed | 2024-03-10T12:02:45Z |
| format | Article |
| id | doaj.art-56bb274ce14741d9856197e425b56113 |
| institution | Directory Open Access Journal |
| issn | 2311-5629 |
| language | English |
| last_indexed | 2024-03-10T12:02:45Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | C |
| spelling | doaj.art-56bb274ce14741d9856197e425b561132023-11-21T16:47:22ZengMDPI AGC2311-56292021-04-01723810.3390/c7020038Polyamide 12/Multiwalled Carbon Nanotube and Carbon Black Nanocomposites Manufactured by 3D Printing Fused Filament Fabrication: A Comparison of the Electrical, Thermoelectric, and Mechanical PropertiesNectarios Vidakis0Markos Petousis1Lazaros Tzounis2Emmanuel Velidakis3Nikolaos Mountakis4Sotirios A. Grammatikos5Mechanical Engineering Department, Hellenic Mediterranean University, 71410 Heraklion, GreeceMechanical Engineering Department, Hellenic Mediterranean University, 71410 Heraklion, GreeceDepartment of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, GreeceMechanical Engineering Department, Hellenic Mediterranean University, 71410 Heraklion, GreeceMechanical Engineering Department, Hellenic Mediterranean University, 71410 Heraklion, GreeceDepartment of Manufacturing & Civil Engineering, NTNU-Norwegian University of Science and Technology, Building B’, Teknologivegen 22, 2815 Gjøvik, NorwayIn this study, nanocomposites with polyamide 12 (PA12) as the polymer matrix and multiwalled carbon nanotubes (MWCNTs) and carbon black (CB) at different loadings (2.5, 5.0, and 10.0 wt.%) as fillers, were produced in 3D printing filament form by melt mixing extrusion process. The filament was then used to build specimens with the fused filament fabrication (FFF) three-dimensional (3D) printing process. The aim was to produce by FFF 3D printing, electrically conductive and thermoelectric functional specimens with enhanced mechanical properties. All nanocomposites’ samples were electrically conductive at filler loadings above the electrical percolation threshold. The highest thermoelectric performance was obtained for the PA12/CNT nanocomposite at 10.0 wt.%. The static tensile and flexural mechanical properties, as well as the Charpy’s impact and Vickers microhardness, were determined. The highest improvement in mechanical properties was observed for the PA12/CNT nanocomposites at 5.0 wt.% filler loading. The fracture mechanisms were identified by fractographic analyses of scanning electron microscopy (SEM) images acquired from fractured surfaces of tensile tested specimens. The nanocomposites produced could find a variety of applications such as; 3D-printed organic thermoelectric materials for plausible large-scale thermal energy harvesting applications, resistors for flexible circuitry, and piezoresistive sensors for strain sensing.https://www.mdpi.com/2311-5629/7/2/38conductive polymer composites (CPCs)three-dimensional (3D) printingnanocomposites3D-printed thermoelectricsflexible conductors3D-printed electronics |
| spellingShingle | Nectarios Vidakis Markos Petousis Lazaros Tzounis Emmanuel Velidakis Nikolaos Mountakis Sotirios A. Grammatikos Polyamide 12/Multiwalled Carbon Nanotube and Carbon Black Nanocomposites Manufactured by 3D Printing Fused Filament Fabrication: A Comparison of the Electrical, Thermoelectric, and Mechanical Properties C conductive polymer composites (CPCs) three-dimensional (3D) printing nanocomposites 3D-printed thermoelectrics flexible conductors 3D-printed electronics |
| title | Polyamide 12/Multiwalled Carbon Nanotube and Carbon Black Nanocomposites Manufactured by 3D Printing Fused Filament Fabrication: A Comparison of the Electrical, Thermoelectric, and Mechanical Properties |
| title_full | Polyamide 12/Multiwalled Carbon Nanotube and Carbon Black Nanocomposites Manufactured by 3D Printing Fused Filament Fabrication: A Comparison of the Electrical, Thermoelectric, and Mechanical Properties |
| title_fullStr | Polyamide 12/Multiwalled Carbon Nanotube and Carbon Black Nanocomposites Manufactured by 3D Printing Fused Filament Fabrication: A Comparison of the Electrical, Thermoelectric, and Mechanical Properties |
| title_full_unstemmed | Polyamide 12/Multiwalled Carbon Nanotube and Carbon Black Nanocomposites Manufactured by 3D Printing Fused Filament Fabrication: A Comparison of the Electrical, Thermoelectric, and Mechanical Properties |
| title_short | Polyamide 12/Multiwalled Carbon Nanotube and Carbon Black Nanocomposites Manufactured by 3D Printing Fused Filament Fabrication: A Comparison of the Electrical, Thermoelectric, and Mechanical Properties |
| title_sort | polyamide 12 multiwalled carbon nanotube and carbon black nanocomposites manufactured by 3d printing fused filament fabrication a comparison of the electrical thermoelectric and mechanical properties |
| topic | conductive polymer composites (CPCs) three-dimensional (3D) printing nanocomposites 3D-printed thermoelectrics flexible conductors 3D-printed electronics |
| url | https://www.mdpi.com/2311-5629/7/2/38 |
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