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Journal of Chemistry
Volume 2017 (2017), Article ID 7191590, 6 pages
Research Article

Surfactant Incorporated Co Nanoparticles Polymer Composites with Uniform Dispersion and Double Percolation

1Institute of Chemistry, University of the Punjab, New Campus, Lahore 54590, Pakistan
2Institute of Chemistry, Government College University, Faisalabad 38030, Pakistan
3Suleman Bin Abdullah Aba Al-Khail Centre for Interdisciplinary Research in Basic Sciences, International Islamic University, Islamabad 44000, Pakistan

Correspondence should be addressed to Mirza Nadeem Ahmad; moc.liamtoh@naivareenoip

Received 26 September 2017; Revised 31 October 2017; Accepted 7 November 2017; Published 13 December 2017

Academic Editor: Yves Grohens

Copyright © 2017 Tajamal Hussain 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.


Series of Cobalt nanoparticles incorporated polymethylmethacrylate composites in the presence and absence of dodecyl-benzene-sulphonic acid (DBSA-CoNPs/PMMA and CoNPs/PMMA, resp.) were synthesized by solution mixing methodology. UV-visible and FTIR techniques were used to confirm the formation of nanocomposite. UV-visible spectra of the composites showed the incorporation of filler particles in the polymer matrix. On the other hand, FTIR spectra indicated the physical interaction between the two phases of the composite. Moreover, the electrical nature of the composites was studied by plotting graphs between electrical conductivity (measured using LCR meter at 100 kHz) and contents of the filler particles as introduced in the polymer matrix. An increase in electrical conductivity was first observed with increasing filler concentration up to the critical percolation threshold value (0.5% for DBSA-CoNPs/PMMA and 1% for CoNPs/PMMA), which then dropped upon further increments in the filler content. However, at higher concentrations, a second jump in the conductivity was observed in case of DBSA-CoNPs/PMMA composites.