Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-27T02:07:44.656Z Has data issue: false hasContentIssue false
  • English
  • Français

Optical Transport Properties of Oriented Isotactic Polypropylene and Carbon Nanotube Nanocomposite Thin Films

Published online by Cambridge University Press:  10 May 2012

Sabyasachi Sarkar ,
Parvathalu Kalakonda ,
Georgi Y. Georgiev ,
Germano S. Iannacchione  and
Peggy Cebe
Sabyasachi Sarkar
Affiliation:
Department of Physics, WPI, Worcester, MA 01609, U.S.A.
Parvathalu Kalakonda
Affiliation:
Department of Physics, WPI, Worcester, MA 01609, U.S.A.
Georgi Y. Georgiev*
Affiliation:
Department of Natural Sciences – Physics and Astronomy, Assumption College, Worcester, MA 01609, U.S.A. Department of Physics and Astronomy, Tufts University, Medford, MA 02155, U.S.A.
Germano S. Iannacchione
Affiliation:
Department of Physics, WPI, Worcester, MA 01609, U.S.A.
Peggy Cebe
Affiliation:
Department of Physics and Astronomy, Tufts University, Medford, MA 02155, U.S.A.
*
*indicates corresponding author: [email protected]; [email protected]
Get access

Abstract

Optical transport through Isotactic Polypropylene (iPP) and multiwall carbon nanotubes (MWCNTs) nanocomposite thin films is important to many applications where optical transmission or polarization are used. Especially interesting is the case where the optical properties are anisotropic as in oriented thin films and the optical transport is different in the direction of orientation and perpendicular to it. Changing the orientation of the film or the polarization of the light can change the way in which the nanocomposite film interacts with light. Our polymer of choice, Isotactic Polypropylene, is one of the most widely used polymers which will increase the applicability of our results. We blended iPP with different concentration of carbon nanotubes (CNTs): 1%, 2% and 5% and oriented the thin film samples using melt-shear at 200°C and 1Hz in a Linkam microscope sharing hot stage. We measured that the index of refraction of the nanocomposites slightly decreased when CNTs are added and that when nanocomposites were shear-oriented at low loading of CNTs the index of refraction showed small difference in directions parallel and perpendicular to the direction of orientation. The extinction coefficient increased therefore it’s tuning in the nanocomposite films by the content of the carbon nanotubes can help devise new materials with the desired values of this property.

Keywords

opticalpolymerabsorption
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1410: Symposium DD – Transport Properties in Polymer Nanocomposites II , 2012 , mrsf11-1410-dd04-02
Copyright
Copyright © Materials Research Society 2012

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. Hobbie, E. K., Wang, H., Kim, H., Lin-Gibson, S. and Grulke, E. A., Physics of Fluids 15(5), 1196 (2003).Google Scholar
2. Li, L. and Jeu, W., Faraday Discuss. 128, 299–319 (2005).Google Scholar
3. Dawid, A. and Gwizdała, W., Journal of Non-Crystalline Solids 355, 1302–1306 (2009).Google Scholar
4. Gwizdała, W., Górny, K. and Gburski, Z., J. of Molec. Str. 887, 148–151 (2008).Google Scholar
5. Georgiev, G., Gombos, E. A., McIntyre, M., Mattera, M., Gati, P., Cabrera, Y. and Cebe, P., in Nanoscale Pattern Formation, edited by Chason, E., Cuerno, R., Gray, J., Heinig, K.-H., (Mater. Res. Soc. Symp. Proc. 1228E, Warrendale, PA, 2010), KK11–81.Google Scholar
6. Georgiev, G., McIntyre, M. B., Judith, R., Gombos, E. A. and Cebe, P., in Symposium Artificially Induced Crystalline Alignment in Thin Films and Nanostructures (Cambridge Journals Online, Cambridge University Press, UK, Materials Research Society Symposium Proceeding, Volume 1308, Warrendale, PA, 2011), DD07–09, DOI:10.1557/opl.2011.157, mrsf10-1308-dd07-09 Google Scholar
7. Hu, L., Hecht, D. S. and Gruner, G., Chem. Rev. 110, 5790–5844 (2010).Google Scholar
8. Tompkins, H. G. and McGahan, W. A., Spectroscopic ellipsometry and reflectometry: A user’s guide; 1st ed.; (Wiely-Interscience, New York, 1999).Google Scholar
9. Azzam, R. M. A. and Bashara, N. M., Ellipsometry and polarized light (Elsevier B.V.: Amsterdam, The Netherlands, 1977).Google Scholar
10. Fujiwara, H., Spectroscopic Ellipsometry: Principles and applications; (John Wiley & Sons Ltd.: Chichester, West Sussex, UK, 2007).Google Scholar
11. Johs, B., Woollam, J. A., Herzinger, C. M., Hilfiker, J. N., Synowicki, R. A. and Bungay, C. L., Optical Metrology CR72, 29–58 (1999)Google Scholar
12. Woollam, J. A., Johs, B., Herzinger, C. M., Hilfiker, J. N., Synowicki, R. A. and Bungay, C. L., Optical Metrology CR72, 3–28 (1999)Google Scholar
13. Röseler, A., in Handbook of Ellipsometry, Eds. Tompkins, H. G. and Irene, E. A. (William Andrew: Norwich, NY, 2005).Google Scholar