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Journal of Nanomaterials
Volume 2012, Article ID 793084, 8 pages
http://dx.doi.org/10.1155/2012/793084
Research Article

Raman Spectroscopy of Isotactic Polypropylene-Halloysite Nanocomposites

1Department of Chemistry, The University of Texas-Pan American, Edinburg, TX 78541, USA
2Department of Physics and Geology, The University of Texas-Pan American, 1201 West University Drive, Edinburg, TX 78541, USA
3Department of Mechanical Engineering, The University of Texas-Pan American, Edinburg, TX 78541, USA

Received 15 June 2012; Revised 20 August 2012; Accepted 3 September 2012

Academic Editor: Steve F. A. Acquah

Copyright © 2012 Elamin E. Ibrahim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Raman spectroscopy investigations on nanocomposites obtained by dispersing halloysite within isotactic polypropylene are reported. A detailed analysis of the modifications of the regularity band associated to the polymeric matrix is presented. The Raman lines assigned to the polymeric matrix are broadened and weakened as the loading with halloysite is increased. The analysis of Raman lines indicates that the polymeric matrix becomes less crystalline upon the loading with halloysite and that the nanofiller is experiencing a weak dehydration upon dispersion within the polymeric matrix, probably due to the related thermal processing used to achieve the dispersion of halloysite.