Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-23T02:36:39.806Z Has data issue: false hasContentIssue false
  • English
  • Français

Piezoresistivity of conducting polyaniline/BaTiO3 composites

Published online by Cambridge University Press:  31 January 2011

R. C. Patil ,
S. Radhakrishnan ,
Sushama Pethkar  and
K. Vijaymohanan
R. C. Patil
Affiliation:
Polymer Science and Engineering Group, National Chemical Laboratory, Pune 411 008, India
S. Radhakrishnan*
Affiliation:
Polymer Science and Engineering Group, National Chemical Laboratory, Pune 411 008, India
Sushama Pethkar
Affiliation:
Physical Chemistry Division, National Chemical Laboratory, Pune 411 008, India
K. Vijaymohanan
Affiliation:
Physical Chemistry Division, National Chemical Laboratory, Pune 411 008, India
*
a)Address all correspondence to this author.
Get access

Abstract

Conducting polyaniline/barium titanate (PANI/BaTiO3) composites exhibiting piezoresistivity properties have been synthesized by the in situ deposition technique by placing a fine grade powder of BaTiO3 in the polymerization reaction mixture. The polyaniline was formed preferentially on the ceramic particles giving a much higher yield for PANI than in absence of the BaTiO3 These composites exhibited piezoresistivity with the piezosensitivity being maximum at a certain composition. The current–voltage characteristics clearly revealed a nonlinear space charge controlled charge transport process. A large hysteresis in these characteristics was also observed which was dependent on the BaTiO3 content in a composite. The various results have been explained on the basis of the charge transport mechanism in the heterogeneous conducting material having insulating domains dispersed in it.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 7 , July 2001 , pp. 1982 - 1988
Copyright
Copyright © Materials Research Society 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Petty, M.C., Bryce, M.R., and Bloor, D., An introduction to molecular electronics (Edward Arnold, London, United Kingdom, The Netherlands, 1995).Google Scholar
2.Scrosati, B., Applications of electroactive polymers (Chapman and Hall, London, United Kingdom, 1993).CrossRefGoogle Scholar
3.Alcacer, L., Conducting polymers-Special applications (Reidel, Dordrecht, United Kingdom, 1989).Google Scholar
4.Epstein, A.J. and MacDiarmid, A.G., Makromol. Chem., Macromol. Symp. 51, 217 (1991).CrossRefGoogle Scholar
5.Heinze, J., Top. Curr. Chem. 152, 2 (1990).Google Scholar
6.Yang, Y. and Heeger, A.J., Appl. Phys. Lett. 64, 1245 (1994).CrossRefGoogle Scholar
7.Unde, S., Ganu, J., and Radhakrishnan, S., Adv. Mater. Opt. Electron. 6, 151 (1996).3.0.CO;2-H>CrossRefGoogle Scholar
8.Wada, Y., in Electronic properties of polymers, edited by Mort, J. and Pfister, G. (John Wiley, New York, 1982), p. 109.Google Scholar
9.Nalwa, H.S., Ferroelectric polymers (Marcel Dekker, New York, 1995), Chapter 11.CrossRefGoogle Scholar
10.Wang, T.T., Herbert, J.M., and Glass, A.M., The applications of ferroelectric polymers (Blackie, Glasgow, United Kingdom, 1988).Google Scholar
11.Harsany, G., Polymer films in sensor applications (Technomic Publisher, Lancaster, PA, 1995).Google Scholar
12. (a)Banno, H. and Ogura, K., Ferroelectrics 95, 171 (1989);CrossRefGoogle Scholar
(b).Newnham, R.E., Ferroelectrics 68, 1 (1986).CrossRefGoogle Scholar
13.Das-Gupta, D.K., Ferroelectric Polymers and Ceramic-Polymer Composites (Trans-Tech. Publ., Uetikon-Zurich, Switzerland, 1994), Chap. 7.CrossRefGoogle Scholar
14.Mazur, K., IEEE Trans. Electr. Insul. 27, 782 (1992).CrossRefGoogle Scholar
15.Maddison, D.S. and Unsworth, J., Synth. Met. 22, 257 (1988).CrossRefGoogle Scholar
16. (a) Radhakrishnan, S., Chakne, S., and Shelke, P., Mater. Lett. 18, 358 (1994);CrossRefGoogle Scholar
(b).Radhakrishnan, S. and Saini, D.R., Polym. Int. 34, 111 (1994).CrossRefGoogle Scholar
17.Mackenzie, J.D. and Ulrich, D.R., Ultrastructure processing of advance ceramics (J. Wiley, New York, 1982), pp. 925, 935.Google Scholar
18.Gust, M.C., Momoda, L.A., and Mecartney, M.L., in Better Ceramics Through Chemistry VI, edited by Cheetham, A.K., Brinkers, C.J., Mecartney, M.L., and Sanchez, C. (Mater. Res. Soc. Symp. Proc. 346, Pittsburgh, PA, 1994), p. 649Google Scholar
19.Xu, Y. and Mackenzie, J.D., Integrated ferroelectrics, edited by Brinkers, C.J. and Sherrer, G.W. (Acad. Press, New York, 1990),p. 117.Google Scholar
20.Radhakrishnan, S. and Saini, D.R., Synth. Met. 58, 243 (1993).CrossRefGoogle Scholar
21.Radhakrishnan, S. and Khedkar, S.P., Synth. Met. 79, 219 (1996).CrossRefGoogle Scholar
22.Wan, M. and Young, J., J. Appl. Polym. Sci. 49, 1639 (1993).CrossRefGoogle Scholar
23. (a) Zaera, F., Kollin, E.B., and Gland, J.L., Surf. Sci. 184, 75 (1987);CrossRefGoogle Scholar
(b).Parenti, V., Pourtous, G., Lazzaroni, R., Bredas, J.L., Ruari, G., Murgia, M., and Zambori, R., Adv. Mater. 10, 319 (1998).3.0.CO;2-Z>CrossRefGoogle Scholar
24.Radhakrishnan, S., Polym. Commun. 26, 153 (1985).Google Scholar
25.Sichel, E.K., Carbon black polymer composites (Marcel Dekker, New York, 1982).Google Scholar
26.Bigg, D.M., Polym. Compos. 8, 1 (1987).CrossRefGoogle Scholar
27. (a)Gutman, F. and Lyons, L.E., Organic semiconductors (J. Wiley, New York, 1967);Google Scholar
(b).Senor, D.A., Electrical properties of polymers (Academic Press, New York, 1982).Google Scholar
28.Radhakrishnan, S., J. Mater. Sci. Lett. 4, 1455 (1985).CrossRefGoogle Scholar