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Publication Type : Journal Article
Thematic Areas : Medical Sciences
Publisher : Journal of Engineered Fibers and Fabrics
Source : Journal of Engineered Fibers and Fabrics, Volume 6, Number 4, p.54-59 (2011)
Keywords : Ac Conductivity, Complex conductivity, Composite fibers, Conducting composites, Electrospinning, Fiber mat, Fibers, Frequency dependent, Insulating polymer, Nanocomposite fibers, Nanocomposites, Non-woven, Polyaniline, Polymer fiber, Polypyrroles, Room temperature, Scanning electron micrographs, scanning electron microscopy, Solvents, Ultra-fine fibers
Campus : Kochi
School : School of Medicine
Department : Biostatistics
Year : 2011
Abstract : Electrospinning is one of the techniques to produce non-woven fiber mats using polymers. The diameters of the fiber produced by this technique are in the range of 10 μm to 10 nm. Electrically conducting ultra fine fibers are useful in many applications in the fields of sensors, and nanoelectronics. However, it is very difficult to obtain fibers of conducting polymers like polyaniline (PANI) and polypyrrole through electrospinning. Hence they are invariably mixed with other insulating polymers such as polymethylmethacrylate (PMMA) to obtain a conducting composite depending on the percolation of the conducting polymer. Here, we report the preparation of PANI-PMMA composite fibers by electrospinning. The scanning electron micrographs and the frequency dependent complex conductivity (σ*(ω)) of these polymer fibers are investigated at room temperature with different concentrations of PANI (5%, 10%, 15%, 20% w/w). It is observed that there is a significant enhancement in the ac conductivity of these fibers with the increase in the concentration of PANI.
Cite this Research Publication : V. J. Babu, Kumar, V. S. Pavan, Subha, G. J., Kumari, V., Natarajan, T. S., A. S. Nair, and Ramakrishna, S., “AC conductivity studies on PMMA-PANI (HCL) nanocomposite fibers produced by electrospinning”, Journal of Engineered Fibers and Fabrics, vol. 6, pp. 54-59, 2011.