Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-26T03:33:50.206Z Has data issue: false hasContentIssue false
  • English
  • Français

A study of the frequency dependence of the dielectrophoretic effect in thermoset polymers

Published online by Cambridge University Press:  31 January 2011

C. P. Bowen ,
T. R. Shrout ,
R. E. Newnham  and
C. A. Randall
C. P. Bowen
Affiliation:
Intercollege Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
T. R. Shrout
Affiliation:
Intercollege Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
R. E. Newnham
Affiliation:
Intercollege Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
C. A. Randall
Affiliation:
Intercollege Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
Get access

Abstract

Ceramic-polymer composites with a 1–3 connectivity can be created via a novel process called dielectrophoretic assembly. The process involves an electric field which is applied to a suspension of ceramic particles in an uncured thermoset polymer matrix. Under appropriate conditions, the applied electric field acts to induce a spatial redistribution of the particles into a chained or fibril structure. It was shown previously that the electrorheological response and fibril microstructure are dependent on both the frequency and magnitude of the applied alternating electric field.3 This paper will show that the frequency dependence of the uncured thermoset polymer suspensions results from the complex electrical phenomena specific to each thermoset system. Specifically, it will be shown through low field dielectric measurements and high field current-voltage analysis that the dielectrophoretic effect can be limited by electrode polarization, ionic conductivity, and space charge relaxation. It is the frequency dependence of these limiting phenomena that gives rise to the observed frequency dependence in the dielectrophoretic force of attraction being utilized to drive particulate assembly.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 9 , September 1997 , pp. 2345 - 2356
Copyright
Copyright © Materials Research Society 1997

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.Randall, C. A., Miyazaki, S., More, K. L., Bhalla, A. S., and Newnham, R. E., Mater. Lett. 15, 26–30 (1992).CrossRefGoogle Scholar
2.Randall, C. A., Miller, D. V., Adair, J. H., and Bhalla, A. S., J. Mater. Res. 8, 899–904 (1993).CrossRefGoogle Scholar
3.Bowen, C. P., Bhalla, A. S., Newnham, R. E., and Randall, C. A., J. Mater. Res. 9, 781–788 (1994).CrossRefGoogle Scholar
4.Pohl, H. A., Dielectrophoresis: The Behavior of Neutral Matter in Non-Uniform Electric Fields (Cambridge University Press, Cambridge, London, New York, 1978).Google Scholar
5.Tao, R., Woestman, J. T., and Jaggi, N. K., Appl. Phys. Lett. 55 (18), 1844–1846 (1989).CrossRefGoogle Scholar
6.Halsey, T. C., “The Structure and Dynamics of Electrorheological Fluids,” Proc. Int. Conf. on Electrorheological Fluids, edited by R., Tao (World Scientific, Singapore, 1992), pp. 37–52.Google Scholar
7.Anderson, R. A., Electrorheological Fluids: Mechanics, Properties, Structure, Technology and Applications, edited by R., Tao (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1992), p. 81.Google Scholar
8.Boissy, C., Foulc, J. N., and Atten, P., Electrorheological Fluids: Mechanics, Properties, Technology and Applications, edited by Tao, R. and Roy, G. D. (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1994), p. 453.Google Scholar
9.Davis, L. C., Appl. Phys. Lett. 60, 319 (1992).CrossRefGoogle Scholar
10.Garino, T., Adolf, D., and Hance, B., Electrorheological Fluids: Mechanics, Properties, Structure, Technology and Applications, edited by R., Tao (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1992), p. 167.Google Scholar
11.Ginder, J. M. and Elie, L. D., Electrorheological Fluids: Mechanics, Properties, Structure, Technology and Applications, edited by R., Tao (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1992), p. 23.Google Scholar
12.Jones, T. B., Electrostatics 25, 231 (1990).CrossRefGoogle Scholar
13.Kim, Y. D. and Klingenberg, D. J., Electrorheological Fluids: Mechanics, Properties, Technology and Applications, edited by R., Tao (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1994), p. 84.Google Scholar
14.Randall, C. A., McCauley, D. E., Bowen, C. P., Shrout, T. R., and Messing, G. L., Electrorheological Fluids: Mechanics, Properties, Technology and Applications, edited by Tao, R. and Roy, G. D. (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1994), p. 60.Google Scholar
15.Brett, C. M. A. and Brett, A. M. O., Electrochemistry: Principles, Methods and Applications (Oxford University Press, Oxford, New York, Tokyo, 1993), p. 228.Google Scholar
16.Felici, N., Foulc, J. N., and Atten, P., Electrorheological Fluids: Mechanics, Properties, Technology and Applications, edited by Tao, R. and Roy, G. D. (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1994), p. 139.Google Scholar
17.Randall, C. A., Bowen, C. P., Shrout, T. R., Messing, G. L., and Newnham, R. E., Electrorheological Fluids: Mechanics, Properties, Technology and Applications, edited by Tao, R. and Roy, G. D. (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1994), p. 516.Google Scholar
18.Kranbuehl, D. E., Delos, S., Yi, E., Mayer, J., Jarvie, T., Hou, T., and Wintree, B., SAMPE Symp. Ser. 30, 638 (1985).Google Scholar
19.Lichtenecker, K., Phys. Z. 30, 805 (1929).Google Scholar
20.Debye, P., Polar Molecules (Chemical Catalog Co., New York, 1929), Chap. 5.Google Scholar
21.Hasted, J. B., Aqueous Dielectrics (Chapman and Hall, London, 1989).Google Scholar
22.Weiss, K. D and Carlson, J. D., Electrorheological Fluids: Mechanics, Properties, Structure, Technology and Applications, edited by R., Tao (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1992), p. 264.Google Scholar
23.Jonscher, A. K., Dielectric Relaxation in Solids (Chelsea Dielectrics Press, London, 1983).Google Scholar
24.Serway, R. A., Physics for Scientists and Engineers, 2nd ed. (Saunders College Publishing, New York, Montreal, London, Sydney, Tokyo, 1986), p. 746.Google Scholar
25.Evans, L. F., Harness, I., Kermode, P. R., and Stangroom, J. E., Electrorheological Fluids: Mechanics, Properties, Structure, Technology and Applications, edited by R., Tao (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1992), p. 154.Google Scholar
26.Ginder, J. M. and Elie, L. D., Electrorheological Fluids: Mechanics, Properties, Structure, Technology and Applications, edited by R., Tao (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1992), p. 23.Google Scholar
27.Shih, Y. H. and Conrad, H., Electrorheological Fluids: Mechanics, Properties, Technology and Applications, edited by Tao, R. and Roy, G. D. (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1994), p. 294.Google Scholar
28.Block, H., Rattray, P., and Watson, T., Electrorheological Fluids: Mechanics, Properties, Structure, Technology and Applications, edited by R., Tao (World Scientific Publishing Co. Pte. Ltd., Singapore, New Jersey, London, Hong Kong, 1992), p. 93.Google Scholar