The Microstructural, Mechanical and Electro-Mechanical Properties of Graphene Aerogel-PVDF Nanoporous Composites

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Abstract:

Graphene aerogel-poly (vinylidene fluoride) (GA-PVDF) nanoporous composites with different concentrations of PVDF are fabricated. Scanning electron microscopy reveals that PVDF films with a typical thickness below 100 nm are coated at the graphene sheets in the nanoporous composites. The GA-PVDF composites show excellent compressibility, ductility and mechanical strength, as well as better sensitivity of stress-dependent electrical resistance compared with those of GAs. The improved mechanical and electro-mechanical behaviours of nanoporous composites are ascribed to the PVDF which possesses piezoelectricity. The structural properties of the graphene-PVDF nanosized hybrid scaffolds are analyzed by dynamical mechanical relaxation. The results demonstrate that the nanoporous composites could be used as high-performance sensors, actuators and kinetic energy harvesters.

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December 2014

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[1] H. Sun, Z. Xu, and C. Gao, Highly Electrically Conductive Ag-Doped Graphene Fibers as Stretchable Conductors, Adv. Mater. 25, 2554–2560 (2013).

DOI: 10.1002/adma.201300774

Google Scholar

[2] H. -P. Cong, X. -C. Ren, P. Wang, and S. -H. Yu, Macroscopic Multifunctional Graphene-Based Hydrogels and Aerogels by a Metal Ion Induced Self-Assembly Process, ACS Nano 6, 2693-2703 (2012).

DOI: 10.1021/nn300082k

Google Scholar

[3] J. Kuang, L. Liu, Y. Gao, D. Zhou, Z. Chen, B. Han, and Z. Zhang, A hierarchically structured graphene foam and its potential as a large-scale strain-gauge sensor. Nanoscale 5, 12171-12177 (2013).

DOI: 10.1039/c3nr03379a

Google Scholar

[4] F. Bauer, Relaxor Fluorinated Polymers: Novel Applications and Recent Developments, Dielectrics and Electrical Insulation IEEE Transactions 17(4), 1106-1112(2010).

DOI: 10.1109/tdei.2010.5539681

Google Scholar

[5] A. Salimi and A. A. Yousefi, Analysis Method: FTIR Studies of β-phase Crystal Formation in Stretched PVDF Films, Polymer Test 22(6), 699-704 (2003).

Google Scholar

[6] A. Jain, J. S. Kumar, S. Srikanth, V. T. Rathod and D. R. Mahapatra, Sensitivity of Polyvinylidene Fluoride Films to Mechanical Vibration Modes and Impact After Optimizing Stretching Conditions, Polymer Engineering & Science 53(4), 707-715 (2013).

DOI: 10.1002/pen.23318

Google Scholar

[7] M. El Achaby, F.Z. Arrakhiz, S. Vaudreuil, E.M. Essassi and A. Qaiss, Piezoelectric β-polymorph Formation and Properties Enhancement in Graphene Oxide-PVDF Nanocomposite Films, Applied Surface Science 258(19), 7668-7677(2012).

DOI: 10.1016/j.apsusc.2012.04.118

Google Scholar

[8] Z.Y. Jiang, G.P. Zheng, H. Zhuo, Y.Z. Liu, J.H. Yang, Enhanced Ferroelectric and Pyroelectric Properties of Poly(vinylidene fluoride) with Addition of Graphene Oxides, Journal of Applied Physics 115, 204101 (2014).

DOI: 10.1063/1.4878935

Google Scholar

[9] J. F. Mano, V. Sencadas, A. M. Costa and S. Lanceros-Mendez, Dynamic Mechanical Analysis and Creep Behaviour of β-PVDF Films, Materials Science and Engineering: A 370(1-2), 336-340(2004).

DOI: 10.1016/j.msea.2002.12.002

Google Scholar

[10] A. Callens, L. Eersels and R. De Batist, Low Temperature Internal Friction on g-irradiated Polyvinylidene Fluoride (PVDF), Journal of Materials Science 13(9), 1887-1990(1978).

DOI: 10.1007/bf00552895

Google Scholar

[11] S. Hofmann, G. Csányi, A. C. Ferrari, M. C. Payne, and J. Robertson, Surface Diffusion: The Low Activation Energy Path for Nanotube Growth, Phys. Rev. Lett. 95, 036101 (2005).

DOI: 10.1103/physrevlett.95.036101

Google Scholar