Monte Carlo Model for Piezoresistivity of Hybrid Nanocomposites

Audrey Gbaguidi1, Sirish Namilae2, Daewon Kim1
1Aerospace Engineering Department, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114
2Aerospace Engineering Department, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114 e-mail:

Tóm tắt

Hybrid nanocomposites with multiple fillers like carbon nanotubes (CNT) and graphene nanoplatelets (GNP) are known to exhibit improved electrical and electromechanical performance when compared to monofiller composites. We developed a two-dimensional Monte Carlo percolation network model for hybrid nanocomposite with CNT and GNP fillers and utilized it to study the electrical conductivity and piezoresistivity as a function of nanocomposite microstructural variations. The filler intersections are modeled considering electron tunneling as the mechanism for electrical percolation. Network modification after elastic deformation is utilized to model the nanocomposite piezoresistive behavior. Systematic improvement in electrical conductivity and piezoresistivity was observed in the hybrid nanocomposites, compared to monofiller CNT nanocomposites. Parametric studies have been performed to show the effect of GNP content, size, aspect ratio, and alignment on the percolation threshold, the conductivity, and piezoresistivity of hybrid CNT–GNP polymer composites.

Từ khóa


Tài liệu tham khảo

2009, A Review and Analysis of Electrical Percolation in Carbon Nanotube Polymer Composites, Compos. Sci. Technol., 69, 1486, 10.1016/j.compscitech.2008.06.018

2006, Graphene-Based Composite Materials, Nature, 442, 282, 10.1038/nature04969

2008, Sensors and Actuators Based on Carbon Nanotubes and Their Composites: A Review, Compos. Sci. Technol., 68, 1227, 10.1016/j.compscitech.2008.01.006

2006, Carbon Nanotube/Polycarbonate Composites as Multifunctional Strain Sensors, J. Nanosci. Nanotechnol., 6, 960, 10.1166/jnn.2006.171

2011, A Carbon Nanotube/Polymer Strain Sensor With Linear and Anti-Symmetric Piezoresistivity, J. Compos. Mater., 45, 10.1177/0021998310393296

2007, Computational Study of Geometry-Dependent Resistivity Scaling in Single-Walled Carbon Nanotube Films, Phys. Rev. B, 75, 125432, 10.1103/PhysRevB.75.125432

2012, Effects of Inter-Tube Distance and Alignment on Tunnelling Resistance and Strain Sensitivity of Nanotube/Polymer Composite Films, Nanotechnology, 23, 055703, 10.1088/0957-4484/23/5/055703

2013, A Numerical Investigation on Piezoresistive Behaviour of Carbon Nanotube/Polymer Composites: Mechanism and Optimizing Principle, Nanotechnology, 24, 265704, 10.1088/0957-4484/24/26/265704

2012, A Novel Approach to Predict the Electrical Conductivity of Multifunctional Nanocomposites, Mech. Mater., 46, 129, 10.1016/j.mechmat.2011.12.006

2012, Tunneling Resistance and Its Effect on the Electrical Conductivity of Carbon Nanotube Nanocomposites, J. Appl. Phys., 111, 093726, 10.1063/1.4716010

2014, On the Mechanism of Piezoresistivity of Carbon Nanotube Polymer Composites, Polymer, 55, 4136, 10.1016/j.polymer.2014.06.024

2015, Anisotropic Electrical Conductivity of Polymer Composites With Aligned Carbon Nanotubes, Polymer, 56, 498, 10.1016/j.polymer.2014.11.038

2010, Recent Advances in Graphene Based Polymer Composites, Prog. Polym. Sci., 35, 1350, 10.1016/j.progpolymsci.2010.07.005

2013, The Effect of Graphene Dispersion on the Mechanical Properties of Graphene/Epoxy Composites, Carbon, 60, 16, 10.1016/j.carbon.2013.03.050

2014, Quantifying the Aggregation Factor in Carbon Nanotube Dispersions by Absorption Spectroscopy, J. Nanosci., 2014, 10.1155/2014/328627

2006, Re-Agglomeration of Carbon Nanotubes in Two-Part Epoxy System—Influence of the Concentration, J. Nanostruct. Polym. Nanocompos., 2, 87

1988, Percolation Properties of Random Ellipses, Phys. Rev. A, 38, 2650, 10.1103/PhysRevA.38.2650

2014, Tunneling Conductivity and Piezoresistivity of Composites Containing Randomly Dispersed Conductive Nano-Platelets, Materials, 7, 2501, 10.3390/ma7042501

2014, Current-Voltage Characteristics of Nanoplatelet-Based Conductive Nanocomposites, Nanoscale Res. Lett., 9, 369, 10.1186/1556-276X-9-369

2009, Geometric Percolation Thresholds of Interpenetrating Plates in Three-Dimensional Space, Phys. Rev. E, 79, 041134, 10.1103/PhysRevE.79.041134

2015, Mechanical Properties of Graphene Nanoplatelet/Carbon Fiber/Epoxy Hybrid Composites: Multiscale Modeling and Experiments, Carbon, 95, 100, 10.1016/j.carbon.2015.08.026

2013, Polystyrene/MWCNT/Graphite Nanoplate Nanocomposites: Efficient Electromagnetic Interference Shielding Material Through Graphite Nanoplate–MWCNT–Graphite Nanoplate Networking, ACS Appl. Mater. Interfaces, 5, 4712, 10.1021/am400658h

2012, Size and Synergy Effects of Nanofiller Hybrids Including Graphene Nanoplatelets and Carbon Nanotubes in Mechanical Properties of Epoxy Composites, Carbon, 50, 5380, 10.1016/j.carbon.2012.07.021

2014, Epoxy Composites With Carbon Nanotubes and Graphene Nanoplatelets–Dispersion and Synergy Effects, Carbon, 78, 268, 10.1016/j.carbon.2014.07.003

2008, Enhanced Thermal Conductivity in a Hybrid Graphite Nanoplatelet–Carbon Nanotube Filler for Epoxy Composites, Adv. Mater., 20, 4740, 10.1002/adma.200800401

2013, Carbon Nanotube–Graphene Nanoplatelet Hybrids as High-Performance Multifunctional Reinforcements in Epoxy Composites, Compos. Sci. Technol., 74, 221, 10.1016/j.compscitech.2012.11.015

2013, Synergistic Electrical and Thermal Transport Properties of Hybrid Polymeric Nanocomposites Based on Carbon Nanotubes and Graphite Nanoplatelets, Carbon, 64, 111, 10.1016/j.carbon.2013.07.042

2012, Electrical Conductivity of Synergistically Hybridized Nanocomposites Based on Graphite Nanoplatelets and Carbon Nanotubes, Nanotechnology, 23, 405202, 10.1088/0957-4484/23/40/405202

2014, A Numerical Study on Electrical Percolation of Polymer-Matrix Composites With Hybrid Fillers of Carbon Nanotubes and Carbon Black, J. Nanomater., 2014, 10.1155/2014/614797

2006, Statistical Characterization of Single-Wall Carbon Nanotube Length Distribution, Nanotechnology, 17, 634, 10.1088/0957-4484/17/3/003

2015, A 2D Percolation-Based Model for Characterizing the Piezoresistivity of Carbon Nanotube-Based Films, J. Mater. Sci., 50, 2973, 10.1007/s10853-015-8862-y

2010, A 2D Elliptical Model of Random Packing for Aggregates in Concrete, J. Wuhan Univ. Technol.: Mater. Sci. Ed., 25, 717, 10.1007/s11595-010-0078-z

2007, Modeling Percolation in High-Aspect-Ratio Fiber Systems. I. Soft-Core Versus Hard-Core Models, Phys. Rev. E, 75, 041120, 10.1103/PhysRevE.75.041120

1963, Electric Tunnel Effect Between Dissimilar Electrodes Separated by a Thin Insulating Film, J. Appl. Phys., 34, 2581, 10.1063/1.1729774

1990, Computing the Block Triangular Form of a Sparse Matrix, ACM Trans. Math. Software (TOMS), 16, 303, 10.1145/98267.98287

2010, Efficient Methods for Large Resistor Networks, IEEE Trans. Comput. Aided Des. Integr. Circuits Syst., 29, 28, 10.1109/TCAD.2009.2034402

2012, Multi-Scale Numerical Simulations on Piezoresistivity of CNT/Polymer Nanocomposites, Nanoscale Res. Lett., 7, 402, 10.1186/1556-276X-7-402

2009, Graphene Supermarket Material Data Sheet

2015, Giant Piezoresistivity in Aligned Carbon Nanotube Nanocomposite: Account for Nanotube Structural Distortion at Crossed Tunnel Junctions, Nanoscale, 7, 1339, 10.1039/C4NR05656F