Hostname: page-component-848d4c4894-xfwgj Total loading time: 0 Render date: 2024-07-07T16:23:56.213Z Has data issue: false hasContentIssue false
  • English
  • Français

Lowering The Percolation Threshold In Carbon Blackfilled Polymer Composites

Published online by Cambridge University Press:  10 February 2011

J. C. Grujnlan ,
W. W. Gerberich  and
L. F. Francis
J. C. Grujnlan
Affiliation:
Chemical Engineering and Materials Science Department, Center for Interfacial Engineering, University of Minnesota - Twin Cities, Minneapolis, MN 55455, [email protected]
W. W. Gerberich
Affiliation:
Chemical Engineering and Materials Science Department, Center for Interfacial Engineering, University of Minnesota - Twin Cities, Minneapolis, MN 55455, [email protected]
L. F. Francis
Affiliation:
Chemical Engineering and Materials Science Department, Center for Interfacial Engineering, University of Minnesota - Twin Cities, Minneapolis, MN 55455, [email protected]
Get access

Abstract

In an effort to lower the percolation threshold of carbon black-filled polymer composites, various polymer microstructures were examined. Composites prepared with a polyvinyl acetate (PVAc) latex and a poly(vinyl acetate – ethylene) water-dispersible powder showed a significantly lowered percolation threshold relative to an equivalently prepared composite that used a polyvinyl alcohol (PVA) solution to form the matrix phase. The percolation threshold of the dispersion-based composites occurred at 5 vol.% carbon black, while the equivalent solutionbased composite produced a threshold at 14 vol.%. By excluding the carbon black from regions occupied by polymeric particles, the dispersion-based composites lead to preferential aggregation of carbon black, as evidenced by SEM, and a lowered percolation threshold.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 576: Symposium DD – Organic/Inorganic Hybrid Materials II , 1999 , 383
Copyright
Copyright © Materials Research Society 1999

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. Sau, K. P., Chaki, T. K., Chakraborty, A., and Khastigir, D., Plast. Rubb. Comp. Proc. App. 26, 291 (1997).Google Scholar
2. Bigg, D. M. and Stutz, D. E., Polymer Composites 4, 40 (1983).10.1002/pc.750040107Google Scholar
3. Scher, H. and Zallen, R., J. Chem. Phys. 53, 3759 (1970).10.1063/1.1674565Google Scholar
4. Sumita, M., Abe, H., Kayaki, H., and Miyasaka, K., J. Macromol. Sci. - Phys. B25, 171 (1986).10.1080/00222348608248036Google Scholar
5. Aharoni, S. M., J. Appl. Phy. 43, 2463 (1972).10.1063/1.1661529Google Scholar
6. Rajagopal, C. and Satyam, M., J. Appl. Phys. 49, 5536 (1978).10.1063/1.324474Google Scholar
7. Tang, H., Chen, X., Tang, A., and Luo, Y., J. Appl. Polym. Sci. 59, 383 (1996).10.1002/(SICI)1097-4628(19960118)59:3<383::AID-APP1>3.0.CO;2-L3.0.CO;2-L>Google Scholar
8. Sumita, M., Sakata, K., Asai, S., Miyasaka, K., and Nakagawa, H., Polym. Bull. 114, 4917 (1991).Google Scholar
9. Wessling, B., Polym. Eng. Sci. 31, 1200 (1991).10.1002/pen.760311608Google Scholar
10. Gubbels, F., Jerome, R., Teyssie, Ph., Vanlathem, E., Deltour, R., Calderone, A., Parente, V., and Bredas, J. L., Macromolecules 27, 1972 (1994).10.1021/ma00085a049Google Scholar
11. Malliaris, A. and Turner, D. T., J. Appl. Phys. 42, 614 (1971).10.1063/1.1660071Google Scholar
12. Grunlan, J. C., Gerberich, W. W., and Franics, L. F., submitted to J. Mater. Res. (unpublished).Google Scholar