In this study, the effect of carbon nanotubes (CNTs) and graphene nanosheets (GNs) on the microstructure, electrical conductivity and relative dielectric permittivity of polypropylene (PP) nanocomposites were investigated in relation to the melt compounding parameters. Although CNTs/GNs can significantly improve the conductivity and permittivity of PP nanocomposites, more significant results can be obtained by using optimal fabrication parameters. For optimal melt processing parameters using Taguchi optimization method, electrical conductivity and relative dielectric permittivity of about 3.08 × 10−5 S/m and 158.97 were achieved, whereas only about 1.34 × 10−11 S/m and 2.02 were measured for pure PP respectively. Therefore, this study showcased optimal melt compounding process parameters for the endless future research on PP-CNTs/GNs nanocomposites for various advanced engineering applications. This will also guide future research on the uniform use of melt fabrication parameters for proximity in comparison of results published on PP-CNTs/GNs nanocomposites.
FanPWangLYangJ, et al.
Graphene/poly(vinylidene fluoride) composites with high dielectric constant and low percolation threshold. Nanotechnology2012;
23: 365702.
2.
UyorUOPopoolaAPPopoolaO, et al.
Energy storage and loss capacity of graphene‐reinforced poly (vinylidene fluoride) nanocomposites from electrical and dielectric properties perspective: a review. Adv Polym Technol2018;
37: 2838–2858.
3.
ShenYHuYChenW, et al.
Modulation of topological structure induces ultrahigh energy density of graphene/Ba 0.6 Sr 0.4 TiO3 nanofiber/polymer nanocomposites. Nano Energy2015;
18: 176–186.
4.
UyorUPopoolaAPopoolaO, et al.
Advancement on suppression of energy dissipation of percolative polymer nanocomposites: a review on graphene based. J Mater Sci Mater Electron2019;
30: 16966–16982.
5.
ZhangW-BZhangZ-XYangJ-H, et al.
Largely enhanced thermal conductivity of poly(vinylidene fluoride)/carbon nanotube composites achieved by adding graphene oxide. Carbon2015;
90: 242–254.
6.
TanDQ.Review of polymer‐based nanodielectric exploration and film scale‐up for advanced capacitors. Adv Funct Mater2020;
30: 1808567.
7.
AdamsSMacDougallFEllwangerR, et al. Advanced capacitors for airborne pulsed high power microwave. In: 1st international energy conversion engineering conference (IECEC), 2003, p.5915. USA: American Institute of Aeronautics and Astronautics.
8.
LecocqHGaroisNLhostO, et al.
Polypropylene/carbon nanotubes composite materials with enhanced electromagnetic interference shielding performance: properties and modeling. Compos Part B: Eng2020;
189: 107866–107812.
9.
UyorUPopoolaAPopoolaO, et al.
Enhanced dielectric performance and energy storage density of polymer/graphene nanocomposites prepared by dual fabrication. J Thermoplast Compos Mater2020;
33: 270–285.
10.
ZhaoYLuoLTangH, et al.
Preparation of high‐K composites with low dielectric loss based on the double‐layer coaxial structure of inorganic/polymer. J Appl Polym Sci2018;
135: 46299–46298.
11.
WengLWangTLiuL.A study on the structure and properties of poly(vinylidene fluoride)/graphite micro-sheet composite films. J Compos Mater2017;
51: 3769–3778.
12.
LinJ-LSuS-MHeY-B, et al.
Improving thermal and mechanical properties of the alumina filled silicone rubber composite by incorporating carbon nanotubes. New Carbon Mater2020;
35: 66–72.
13.
ChrissafisKBikiarisD.Can nanoparticles really enhance thermal stability of polymers? Part I: an overview on thermal decomposition of addition polymers. Thermochim Acta2011;
523: 1–24.
14.
BaezaGPGenixA-CDegrandcourtC, et al.
Mechanism of aggregate formation in simplified industrial silica styrene–butadiene nanocomposites: effect of chain mass and grafting on rheology and structure. Soft Matter2014;
10: 6686–6695.
15.
UyorUOPopoolaAPIPopoolaOM, et al.
Mechanically insulated graphene/polymer nanocomposites with improved dielectric performance and energy storage capacity. Polym Sci Ser A2018;
60: 875–885.
16.
UyorUOPopoolaAPIPopoolaOM, et al.
Enhanced thermal and mechanical properties of polymer reinforced with slightly functionalized graphene nanoplatelets. J Test Eval2019;
47: 2681–2692.
17.
BikiarisD.Microstructure and properties of polypropylene/carbon nanotube nanocomposites. Materials2010;
3: 2884–2946.
EsawiAMSalemHGHusseinHM.Effect of processing technique on the dispersion of carbon nanotubes within polypropylene carbon nanotube‐composites and its effect on their mechanical properties. Polym Compos2010;
31: 772–780.
20.
WangHLiZHongK, et al.
Property improvement of multi-walled carbon nanotubes/polypropylene composites with high filler loading via interfacial modification. RSC Adv2019;
9: 29087–29096.
21.
LiZChenMMaW.Polypropylene/hydroxyl-multiwall carbon nanotubes composites: crystallization behavior, mechanical properties, and foaming performance. J Mater Sci2016;
51: 4566–4579.
22.
SuhermanHSahariJSulongAB.Optimization mixing parameters on the electrical conductivity of polymer nanocomposites based on the Taguchi method. AMM2011;
52–54: 31–36.
23.
GarzónCPalzaH.Electrical behavior of polypropylene composites melt mixed with carbon-based particles: effect of the kind of particle and annealing process. Compos Sci Technol2014;
99: 117–123.
24.
LiC-QZhaJ-WLongH-Q, et al.
Mechanical and dielectric properties of graphene incorporated polypropylene nanocomposites using polypropylene-graft-maleic anhydride as a compatibilizer. Compos Sci Technol2017;
153: 111–118.
25.
YuanBBaoCSongL, et al.
Preparation of functionalized graphene oxide/polypropylene nanocomposite with significantly improved thermal stability and studies on the crystallization behavior and mechanical properties. Chem Eng J2014;
237: 411–420.
26.
KazemiYKakroodiARWangS, et al.
Conductive network formation and destruction in polypropylene/carbon nanotube composites via crystal control using supercritical carbon dioxide. Polymer2017;
129: 179–188.
27.
AmeliAWangSKazemiY, et al.
A facile method to increase the charge storage capability of polymer nanocomposites. Nano Energy2015;
15: 54–65.
28.
AmeliAKazemiYWangS, et al.
Process-microstructure-electrical conductivity relationships in injection-molded polypropylene/carbon nanotube nanocomposite foams. Compos Part A: Appl Sci Manuf2017;
96: 28–36.
29.
UjahCPopoolaAPopoolaO, et al.
Optimisation of spark plasma sintering parameters of Al-CNTs-Nb nano-composite using Taguchi design of experiment. Int J Adv Manuf Technol2019;
100: 1563–1573.
30.
AbeJPopoolaOPopoolaA, et al.
Application of Taguchi design method for optimization of spark plasma sintering process parameters for Ti-6Al-4V/h-BN binary composite. Eng Res Express2019;
1: 025043.
31.
ModiMAgarwalGPatilV, et al.
Parametric optimization in drilling of Al–SiC composite using Taguchi method. Int J Sci Technol Res2019;
8: 2019–2022.
32.
SuhermanH.IrmayaniOptimization of compression moulding parameters of multiwall carbon nanotube/synthetic graphite/epoxy nanocomposites with respect to electrical conductivity. AIMS Mater Sci2019;
6: 621–634.
33.
UyorUOmahAAigbodionV, et al.
Effects of carbonized particles on microstructure and mechanical properties of epoxy resin. Int J Adv Manuf Technol2019;
103: 4283–4292.
34.
YuJChoiHKKimHS, et al.
Synergistic effect of hybrid graphene nanoplatelet and multi-walled carbon nanotube fillers on the thermal conductivity of polymer composites and theoretical modeling of the synergistic effect. Compos Part A: Appl Sci Manuf2016;
88: 79–85.
35.
LeeJ-IYangS-BJungH-T.Carbon nanotubes–polypropylene nanocomposites for electrostatic discharge applications. Macromolecules2009;
42: 8328–8334.
36.
SzentesAVargaCHorvathG, et al.
Electrical resistivity and thermal properties of compatibilized multi-walled carbon nanotube/polypropylene composites. Express Polym Lett2012;
6: 494–502.
37.
SchmidtDShahDGiannelisEP.New advances in polymer/layered silicate nanocomposites. Curr Opin Solid State Mater Sci2002;
6: 205–212.
38.
HeFLauSChanHL, et al.
High dielectric permittivity and low percolation threshold in nanocomposites based on poly(vinylidene fluoride) and exfoliated graphite nanoplates. Adv Mater2009;
21: 710–715.
39.
KovalchukAAShevchenkoVGShchegolikhinAN, et al.
Isotactic and syndiotactic polypropylene/multi-wall carbon nanotube composites: synthesis and properties. J Mater Sci2008;
43: 7132–7140.
40.
StanFSanduLIFetecauC, et al.
Effect of reprocessing on the rheological, electrical, and mechanical properties of polypropylene/carbon nanotube composites. J Micro and Nano-Manuf2017;
5: 021005.
41.
MensahBKimHGLeeJ-H, et al.
Carbon nanotube-reinforced elastomeric nanocomposites: a review. Int J Smart Nano Mater2015;
6: 211–238.
42.
SakkopoulosSVitoratosEDalasE.Conductivity degradation due to thermal aging in conducting polyaniline and polypyrrole. Synth Metals1998;
92: 63–67.
43.
DalasESakkopoulosSVitoratosE.Thermal degradation of the electrical conductivity in polyaniline and polypyrrole composites. Synth Metals2000;
114: 365–368.
44.
LiQXueQHaoL, et al.
Large dielectric constant of the chemically functionalized carbon nanotube/polymer composites. Compos Sci Technol2008;
68: 2290–2296.
45.
ChuLXueQSunJ, et al.
Porous graphene sandwich/poly(vinylidene fluoride) composites with high dielectric properties. Compos Sci Technol2013;
86: 70–75.
46.
BaezaGPOberdisseJAlegriaA, et al.
A high-temperature dielectric process as a probe of large-scale silica filler structure in simplified industrial nanocomposites. Phys Chem Chem Phys2015;
17: 1660–1666.
47.
GenixA-CBaezaGPOberdisseJ.Recent advances in structural and dynamical properties of simplified industrial nanocomposites. Eur Polym J2016;
85: 605–619.
