Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-20T06:43:01.172Z Has data issue: false hasContentIssue false
  • English
  • Français

Electrically Conducting Compatible Blends Of Polyaniline / Poly (Vinyl Pyrrolidone)

Published online by Cambridge University Press:  16 February 2011

William B. Stockton  and
M. F. Rubner
William B. Stockton
Affiliation:
Department Of Materials Science And Engineering, Massachusetts Institute Of Technology, Cambridge, MA 02139.
M. F. Rubner
Affiliation:
Department Of Materials Science And Engineering, Massachusetts Institute Of Technology, Cambridge, MA 02139.
Get access

Abstract

Blending polyaniline (PAn) with a host polymer has the advantage of reducing the amount of polyaniline necessary for conductivity, increasing the stability of this conduction, and enhancing the overall mechanical integrity, versatility, and processability of PAn. PAn blends have generally been observed to be immiscible, reducing many of the above mentioned advantages. In this work, PAn was solution blended with poly (vinyl pyrrolidone) (PVP) in either NMP or DMAc, both polar solvents with an amide linkage. We have found PAn to be miscible with PVP under certain processing conditions. The extent of this compatibility and resulting mechanical properties were assessed by DMA, DSC, TGA, SAXS, and light Microscopy. DSC thermograms exhibit a single Tg for all blends ranging from 3 to 30 % by weight PAn. Light Microscopy and SAXS also suggest no phase separation. TGA results show that NMP binds very tightly to both PAn and PVP, with solvent cast blends retaining up to 20 wt% NMP, even after relatively vigorous drying. Electrical conductivity measurements of cast films show conductivity to range from 10-3to 2 S/cm over the same composition range.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 328: Symposium Q – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials , 1993 , 257
Copyright
Copyright © Materials Research Society 1994

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. Yang, C.Y., Cao, Y., Smith, P., and Heeger, A.J., ACS Polymer Preprints, 34 (1), 790 (1993).Google Scholar
2. Cao, Y. and Heeger, A.J., Synth. Met., 52, 193 (1992).Google Scholar
3. Cao, Y., Smith, P., and Heeger, A.J., Synth. Met., 48, 91 (1992).Google Scholar
4. Andreatta, A. and Smith, P., Synth. Met., 55, 1017 (1993).Google Scholar
5. Yang, S.Y. and Ruckenstein, E., Synth. Met., 59, 1 (1993).Google Scholar
6. Ruckenstein, E. and Yang, S.Y., Synth. Met., 53, 283 (1993).Google Scholar
7. Elsenbaumer, R.L., U.S. Patent No. 4,983,322 (1991).Google Scholar
8. Han, C.C., Elsenbaumer, R.L., Shacklette, L.W., and Miller, G.G., International Patent Application, No. WO 92/11644 (1992).Google Scholar
9. Trivedi, D.C. and Dhawan, S.K., Synth. Met., 58, 309 (1993).Google Scholar
10. Liao, Y.-H. and Levon, K., ACS PMSE Proc., 69, 327 (1993).Google Scholar
11. Malhotra, B.D., Ghosh, S., and Chandra, R., J. Appl. Polym. Sci., 40, 1049 (1990).Google Scholar
12. Kang, Y., Lee, M.-H., and Rhee, S.B., Synth. Met., 52, 319 (1992).CrossRefGoogle Scholar
13. Sun, L., Yang, S.C., and Liu, J.-M., ACS Polymer Preprints, 33 (2), 379 (1992).Google Scholar
14. Chiang, J.-C. and MacDiarmid, A.G., Synth. Met., 13, 193 (1986).Google Scholar
15. Stockton, W.B. and Rubner, M.F., to be published in Polymer Preprints, ACS Meeting, San Diego, March 1994.Google Scholar
16. Chen, S.-A. and Lee, H.-T., Synth. Met., 57, 1040 (1993).Google Scholar