Skip to main content Accessibility help
×
Home

Comparison of the Electrical Properties of PS-PMMA-MWNT Composites Made by Three Different Fabrication Methods

  • Samual J. Wilson (a1) and Rosario A. Gerhardt (a2)

Abstract

Polystyrene (PS), polymethyl-methacrylate (PMMA) and multi-walled carbon nanotubes (MWNT) were used to fabricate conductive nanocomposites using various mixing methods, followed by compression molding to analyze their electrical properties. The main objective of this research project was to evaluate how using different mixing techniques alter the composite microstructure and hence the properties of the resultant composite material. Three fabrication techniques were selected to be investigated: mechanical mixing, melt-mixing, and solution mixing. The concentration of the fillers was kept constant at 2 wt% MWNT to simplify comparisons. After mixing, the composite mixtures were compression molded at the same temperature of 180°C. It was found that each mixing method yielded uniquely different AC conductivity profiles which can be attributed to how the fabrication method used affected the arrangement of the CNTs in the composite structure. This newfound control of the electrical properties of the composite materials could definitely be useful to researchers because one can choose the proper fabrication technique based on what properties are desired.

Copyright

Corresponding author

References

Hide All
1. Kim, K, Cho, SJ, Kim, ST, Chin, IJ, and Choi, HJ. “Formation of Two-dimensional Array of Multiwalled Carbon Nanotubes in Polystyrene/poly(methyl Methacrylate) Thin Film.” Macromolecules, 38.26 (2005): 1062310626.
2. Ou, Runqing, Gupta, Sidhartha, Aaron Parker, Charles, and Gerhardt, Rosario A.. “Fabrication and Electrical Conductivity of Poly(methyl Methacrylate) (PMMA)/Carbon Black (CB) Composites: Comparison Between an Ordered Carbon Black Nanowire-Like Segregated Structure and a Randomly Dispersed Carbon Black Nanostructure.” Journal of Physical Chemistry B, 110.45 (2006): 2236522373.
3. Capozzi, CJ, and Gerhardt, RA. “Novel Percolation Mechanism in PMMA Matrix Composites Containing Segregated ITO Nanowire Networks.” Advanced Functional Materials, 17.14 (2007): 25152521
4. Mu, Minfang, Walker, Amanda, Torkelson, John, and Winey, Karen. “Cellular Structures of Carbon Nanotubes in a Polymer Matrix Improve Properties Relative to Composites with Dispersed Nanotubes.” Polymer, 49.5 (2008): 1332–133
5. Zhang, Z., Zhang, J., Chen, P., Zhang, B., He, J., and Hu, G.-H., “Enhanced interactions between multi-walled carbon nanotubes and polystyrene induced by melt mixing,” Carbon, vol. 44 (2006):. 692698.
6. Yufa, Nataliya, Li, Jason, and Sibener, S. “In-Situ High-Temperature Studies of Diblock Copolymer Structural Evolution.”Macromolecules, 42.7 (2009): 26672671
7. Lu, Zaijun, Wan, Dechenc, and Huang, Junlian. “Preparation of PMMA-PS-PMMA Via Combination of Anionic and Photoinduced Charge-transfer Polymerization.” Journal of Applied Polymer Science, 74.8 (1999): 20722076.
8. Waddell, J., Ou, R, Capozzi, C.J., Gupta, S., Parker, C.A, Gerhardt, R.A., Seal, K., Kalinin, S.V., and Baddorf, A.P., “Detection of percolating paths in polyhedral segregated network composites using electrostatic force microscopy and conductive atomic force microscopy,” Appl.Phys.Lett., 95(2009): 233122.
9. Prystaj, Laurissa, Master’s Thesis, Georgia Tech, 2008.
10. Boyea, John, Master’s Thesis, Georgia Tech, 2010.
11. Calberg, C, Blacher, S, Gubbels, F, Brouers, F, Deltour, R, and Jerome, R. “Electrical and Dielectric Properties of Carbon Black Filled Co-continuous Two-phase Polymer Blends.” Journal of Physics D-applied Physics, 32.13 (1999): 15171525.
12. Balberg, I., Anderson, C.H., Alexander, S. and Wagner, N., “Excluded Volume and its Relation to the Onset of Percolation,” Phys. Rev. B, 30(1984): 3933–43.

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed