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Porosity and composition dependence on electrical and piezoresistive properties of thermoplastic polyurethane nanocomposites

  • Reza Rizvi (a1) and Hani Naguib (a2)

Abstract

The development and characterization of pressure sensing porous nanocomposites are reported here. A thermoplastic polyurethane (TPU) was chosen as an elastomeric matrix, which was reinforced with multiwall carbon nanotubes (MWNTs) by high shear twin screw extrusion mixing. Porosity was introduced to the composites through the phase separation of a single TPU-carbon-dioxide gas solution. Interactions between MWNT and TPU were elucidated through calorimetry, gravimetric decomposition, conductivity measurements, and microstructure imaging. The piezoresistance (pressure–resistance) behavior of the nanocomposites was investigated and found to be dependent on MWNT concentration and nanocomposite microstructure. Mechanisms of piezoresistance in solid and porous nanocomposites are proposed.

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a)Address all correspondence to this author. e-mail: naguib@mie.utoronto.ca

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1.Breuer, O. and Sundararaj, U.: Big returns from small fibers: A review of polymer/carbon nanotube composites. Polym. Compos. 25, 630645 (2004).
2.Coleman, J.N., Khan, U., Blau, W.J., and Gun’ko, Y.K.: Small but strong: A review of the mechanical properties of carbon nanotube–polymer composites. Carbon 44, 16241652 (2006).
3.Harris, P.J.F.: Carbon nanotube composites. Int. Mater. Rev. 49, 3143 (2004).
4.Li, C., Thostenson, E.T., and Chou, T.: Sensors and actuators based on carbon nanotubes and their composites: A review. Compos. Sci. Technol. 68, 12271249 (2008).
5.Kobashi, K., Villmow, T., Andres, T., and Pötschke, P.: Liquid sensing of melt-processed poly(lactic acid)/multi-walled carbon nanotube composite films. Sens. Actuators, B 134, 787795 (2008).
6.Hu, N., Karube, Y., Arai, M., Watanabe, T., Yan, C., Li, Y., Liu, Y., and Fukunaga, H.: Investigation on sensitivity of a polymer/carbon nanotube composite strain sensor. Carbon 48, 680687 (2010).
7.Li, Y., Zhao, L., and Shimizu, H.: Electrically conductive polymeric materials with high stretchability and excellent elasticity by a surface coating method. Macromol. Rapid Commun. 32, 289294 (2011).
8.Zhou, Y., He, B., Zhou, W., Huang, J., Li, X., Wu, B., and Li, H.: Electrochemical capacitance of well-coated single-walled carbon nanotube with polyaniline composites. Electrochim. Acta 49, 257262 (2004).
9.Tahhan, M., Truong, V., Spinks, G.M., and Wallace, G.G.: Carbon nanotube and polyaniline composite actuators. Smart Mater. Struct. 12, 626632 (2003).
10.Shi, J., Guo, Z., Zhan, B., Luo, H., Li, Y., and Zhu, D.: Actuator based on MWNT/PVA hydrogels. J. Phys. Chem. B 109, 1478914791 (2005).
11.Bartholome, C., Derre, A., Roubeau, O., Zakri, C., and Poulin, P.: Electromechanical properties of nanotube-PVA composite actuator bimorphs. Nanotechnology 19, 325501 (2008).
12.Allaoui, A., Bai, S., Cheng, H.M., and Bai, J.B.: Mechanical and electrical properties of a MWNT/epoxy composite. Compos. Sci. Technol. 62, 19931998 (2002).
13.Bekyarova, E., Thostenson, E.T., Yu, A., Kim, H., Gao, J., Tang, J., Hahn, H.T., Chou, T-W., Itkis, M.E., and Haddon, R.C.: Multiscale carbon nanotube-carbon fiber reinforcement for advanced epoxy composites. Langmuir 23, 39703974 (2007).
14.Saeed, M.B. and Zhan, M.: Adhesive strength of nano-size particles filled thermoplastic polyimides. Part-I: Multi-walled carbon nano-tubes (MWNT)-polyimide composite films. Int. J. Adhes. Adhes. 27, 306318 (2007).
15.Yurdumakan, B., Raravikar, N.R., Ajayan, P.M., and Dhinojwala, A.: Synthetic gecko foot-hairs from multiwalled carbon nanotubes. Chem. Commun. 30, 37993801 (2005).
16.Webster, J.G.: Tactile Sensors for Robotics and Medicine (John Wiley and Sons, New York, NY, 1988).
17.Rowe, A.C.H., Donoso-Barrera, A., Renner, C., and Arscott, S.: Giant room-temperature piezoresistance in a metal-silicon hybrid structure. Phys. Rev. Lett. 100, 145501 (2008).
18.Bloor, D., Donnelly, K., Hands, P.J., Laughlin, P., and Lussey, D.: A metal-polymer composite with unusual properties. J. Phys. D: Appl. Phys. 38, 28512860 (2005).
19.Bauhofer, W. and Kovacs, J.Z.: A review and analysis of electrical percolation in carbon nanotube polymer composites. Compos. Sci. Technol. 69, 14861498 (2009).
20.Carpi, F. and De Rossi, D.: Electroactive polymer-based devices for e-textiles in biomedicine. IEEE Trans. Inf. Technol. Biomed. 9, 295318 (2005).
21.Bautista-Quijano, J.R., Aviles, F., Aguilar, J.O., and Tapia, A.: Strain sensing capabilities of a piezoresistive MWCNT-polysulfone film. Sens. Actuators, A 159, 135140 (2010).
22.Loh, K.J., Lynch, J.P., Shim, B.S., and Kotov, N.A.: Tailoring piezoresistive sensitivity of multilayer carbon nanotube composite strain sensors. J. Intell. Mater. Syst. Struct. 19, 747764 (2008).
23.Hu, N., Karube, Y., Yan, C., Masuda, Z., and Fukunaga, H.: Tunneling effect in a polymer/carbon nanotube nanocomposite strain sensor. Acta Mater. 56, 29292936 (2008).
24.Knite, M., Tupureina, V., Fuith, A., Zavickis, J., and Teteris, V.: Polyisoprene-multi-wall carbon nanotube composites for sensing strain. Mater. Sci. Eng., C 27, 11251128 (2007).
25.Wichmann, M.H.G., Buschhorn, S.T., Gehrmann, J., and Schulte, K.: Piezoresistive response of epoxy composites with carbon nanoparticles under tensile load. Phys. Rev. B: Condens. Matter 80, 245437 (2009).
26.Chen, L., Chen, G., and Lu, L.: Piezoresistive behavior study on finger-sensing silicone rubber/graphite nanosheet nanocomposites. Adv. Funct. Mater. 17, 898904 (2007).
27.Stubler, N., Fritzsche, J., and Kluppel, M.: Mechanical and electrical analysis of carbon black networking in elastomers under strain. Polym. Eng. Sci. 51, 12061217 (2011).
28.Lu, J., Lu, M., Bermak, A., and Lee, Y-K.: Study of piezoresistance effect of carbon nanotube-PDMS composite materials for nanosensors. (IEEE Computer Society 7th International Conference on Nanotechnology, August 2–5, 2007; Hong Kong, China).
29.Hwang, J., Jang, J., Hong, K., Kim, K.N., Han, J.H., Shin, K., and Park, C.E.: Poly(3-hexylthiophene) wrapped carbon nanotube/poly(dimethylsiloxane) composites for use in finger-sensing piezoresistive pressure sensors. Carbon 49, 106110 (2011).
30.Dang, Z., Jiang, M., Xie, D., Yao, S., Zhang, L., and Bai, J.: Supersensitive linear piezoresistive property in carbon nanotubes-silicone rubber nanocomposites. J. Appl. Phys. 104, 024114 (2008).
31.Klempner, D. and Frisch, K.C.: Handbook of Polymeric Foams and Foam Technology (Oxford University Press, New York, NY, 1991).
32.Strauss, W. and D'Souza, N.A.: Supercritical CO2 processed polystyrene nanocomposite foams. J. Cell. Plast. 40, 229241 (2004).
33.Rizvi, R., Kim, J., and Naguib, H.: Synthesis and characterization of novel low density polyethylene-multiwall carbon nanotube porous composites. Smart Mater. Struct. 18, 104002 (2009).
34.Matsunaga, K., Sato, K., Tajima, M., and Yoshida, Y.: Gas permeability of thermoplastic polyurethane elastomers. Polym. J. 37, 413417 (2005).
35.Ito, S., Matsunaga, K., Tajima, M., and Yoshida, Y.: Generation of microcellular polyurethane with supercritical carbon dioxide. J. Appl. Polym. Sci. 106, 35813586 (2007).
36.Naguib, H.E., Park, C.B., Reichelt, N., and Panzer, U.: Strategies for achieving ultra low-density polypropylene foams. Polym. Eng. Sci. 42, 14811492 (2002).
37.Shen, J., Zeng, C., and Lee, L.J.: Synthesis of polystyrene-carbon nanofibers nanocomposite foams. Polymer 46, 52185224 (2005).
38.Rizvi, R., Khan, O., and Naguib, H.E.: Development and characterization of solid and porous polylactide-multiwall carbon nanotube composites. Polym. Eng. Sci. 51, 4353 (2011).
39.Barsoukov, E. and Macdonald, J.R.. Impedance Spectroscopy: Theory, Experiment, and Applications (John Wiley and Sons, Hoboken, NJ, 2005).
40.Zhihua, P., Jingcui, P., Yanfeng, P., Yangyu, O., and Yantao, N.: Complex permittivity and microwave absorption properties of carbon nanotubes/polymer composite: A numerical study. Phys. Lett. A 372, 37143718 (2008).
41.Ikkala, O.T., Laakso, J., Vakiparta, K., Virtanen, E., Ruohonen, H., Jarvinen, H., Taka, T., Passiniemi, P., and Osterholm, J.: Counter-ion induced processibility of polyaniline: Conducting melt processible polymer blends. Synth. Met. 69, 97100 (1995).
42.Pud, A., Ogurtsov, N., Korzhenko, A., and Shapoval, G.: Some aspects of preparation methods and properties of polyaniline blends and composites with organic polymers. Prog. Polym. Sci. 28, 17011753 (2003).
43.Kremer, F. and Schonhals, A.: Broadband Dielectric Spectroscopy (Springer Verlag, Berlin, Germany, 2003).

Keywords

Porosity and composition dependence on electrical and piezoresistive properties of thermoplastic polyurethane nanocomposites

  • Reza Rizvi (a1) and Hani Naguib (a2)

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