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Fabrication of PLA/PCL/Graphene Nanoplatelet (GNP) Electrically Conductive Circuit Using the Fused Filament Fabrication (FFF) 3D Printing Technique
被引:39
作者:
Masarra, Nour-Alhoda
[1
]
Batistella, Marcos
[1
]
Quantin, Jean-Christophe
[2
]
Regazzi, Arnaud
[2
]
Pucci, Monica Francesca
[2
]
El Hage, Roland
[3
]
Lopez-Cuesta, Jose-Marie
[1
]
机构:
[1] IMT Mines Ales, Polymers Composites & Hybrids PCH, F-30100 Ales, France
[2] Univ Montpellier, CNRS, IMT Mines Ales, LMGC, F-30100 Ales, France
[3] Lebanese Univ, Fac Sci 2, PR2N EDST, Lab Phys Chem Mat LCPM, Campus Fanar,POB 90656, Jdeideh, Lebanon
来源:
关键词:
electrical conductivity;
fused filament fabrication;
3D printing;
polymer bio nanocomposites;
PLA;
PCL;
GNP;
RHEOLOGICAL PROPERTIES;
PERCOLATION-THRESHOLD;
MECHANICAL-PROPERTIES;
TENSILE PROPERTIES;
GRAPHENE NETWORKS;
PHASE MORPHOLOGY;
POLYLACTIC ACID;
COMPOSITES;
BLENDS;
POLY(EPSILON-CAPROLACTONE);
D O I:
10.3390/ma15030762
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
For the purpose of fabricating electrically conductive composites via the fused filament fabrication (FFF) technique whose properties were compared with injection-moulded properties, poly(lactic acid) (PLA) and polycaprolactone (PCL) were mixed with different contents of graphene nanoplatelets (GNP). The wettability, morphological, rheological, thermal, mechanical, and electrical properties of the 3D-printed samples were investigated. The microstructural images showed the selective localization of the GNPs in the PCL nodules that are dispersed in the PLA phase. The electrical resistivity results using the four-probes method revealed that the injection-moulded samples are insulators, whereas the 3D-printed samples featuring the same graphene content are semiconductors. Varying the printing raster angles also exerted an influence on the electrical conductivity results. The electrical percolation threshold was found to be lower than 15 wt.%, whereas the rheological percolation threshold was found to be lower than 10 wt.%. Furthermore, the 20 wt.% and 25 wt.% GNP composites were able to connect an electrical circuit. An increase in the Young's modulus was shown with the percentage of graphene. As a result, this work exhibited the potential of the FFF technique to fabricate biodegradable electrically conductive PLA-PCL-GNP composites that can be applicable in the electronic domain.
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页数:27
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