Polyaniline-multiwalled carbon nanotube composites: Characterization by WAXS and TGA |
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| Authors: | T. Jeevananda Siddaramaiah Taek Su Lee Joong Hee Lee O. M. Samir R. Somashekar |
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| Affiliation: | 1. Bin Fusion Research Team, Department of Polymer and Nano Science and Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, South Korea;2. Bin Fusion Research Team, Department of Polymer and Nano Science and Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, South Korea Department of Polymer Science and Technology, Sri Jayachamarajendra College of Engineering, Mysore 570 006, India;3. Department of Studies in Physics, University of Mysore, Mysore 570 006, India |
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| Abstract: | Polyaniline/carboxylated multi-walled carbon nanotube (PAni/c-MWNT) nanocomposites have been synthesized by micellar aided emulsion polymerization with various c-MWNTs compositions, viz., 0.5, 1, 5, and 10 wt %. The microcrystalline parameters such as the nanocrystal size (〈N〉), lattice strain (g), interplanar distance (dhkl), width of the crystallite size distribution, surface weighted crystal size (Ds), and volume of the ordered regions were calculated from the X-ray data by using two mathematical models, namely the Exponential distribution and Reinhold distribution methods. The effects of heat ageing on the microcrystalline parameters of the PAni/c-MWNT nanocomposites were also studied and the results are correlated. The thermal stability and electrical resistivity of the PAni/c-MWNT nanocomposites were examined with thermogravimetric analysis (TGA) and a conventional two-probe method. The TGA data indicate that the thermal stability of the nanocomposites improved after the incorporation of c-MWNTs. The influence of temperature on the resistivity of the nanocomposites was also measured. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci 2008 |
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| Keywords: | carbon nanotubes polyaniline nanocomposites microcrystalline parameters electrical resistivity thermal stability |
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