Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30121
Synthesis, Characterization and Impedance Analysis of Polypyrrole/La0.7Ca0.3MnO3 Nanocomposites

Authors: M. G. Smitha, M. V. Murugendrappa

Abstract:

Perovskite manganite La0.7Ca0.3MnO3 was synthesized by Sol-gel method. Polymerization of pyrrole was carried by in-situ polymerization method. The composite of pyrrole (Py)/La0.7Ca0.3MnO3 composite in the presence of oxidizing agent ammonium per sulphate to synthesize polypyrrole (PPy)/La0.7Ca0.3MnO3 (LCM) composite was carried out by the same in-situ polymerization method. The PPy/LCM composites were synthesized with varying compositions like 10, 20, 30, 40, and 50 wt.% of LCM in Py. The surface morphologies of these composites were analyzed by using scanning electron microscope (SEM). The images show that LCM particles are embedded in PPy chain. The impedance measurement of PPy/LCM at different temperature ranges from 30 to 180 °C was studied using impedance analyzer. The study shows that impedance is frequency and temperature dependent and it is found to decrease with increase in frequency and temperature.

Keywords: Polypyrrole, sol gel, impedance, composites.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1340056

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 698

References:


[1] K K Gupta, P T Das, T L Nath, P C Jana, A K Meikap, Int. J. of soft computing and Engg. (IJSCE), ISSN: 2231-2307, 2, (2012), pp 2231-2307.
[2] D Uthra, Characterization of Doped Rare Earth Manganites, La0.68-x AxCa0.32MnO3, where A = Y, Gd (x = 0.00, 0.08), Bulg, J. Physics, 35, (2008), pp 135-141.
[3] C Zener, Interaction Between the d Shells in the Transition Metals, Phys. Rev., 81, (1951), p 440.
[4] Ping Duana, Zhenghao Chenb, Shouyu Daib, Lifeng Liub, J. Gao, J. Magnetism and Magnetic Materials, 1, (2006), pp 521–526.
[5] Sunita Keshri Shaw, Leena Joshi, Sanjeeb Kumar Rout, J. of Alloys and Compounds, 485 (2009) pp 501–506.
[6] Kudoand H, Obayashi, J. Electrochem. Soc., 123, 415 (1976) p 6.
[7] P Duwez, F H Brown, F Odell, J. Electrochem. Soc., 98, (1951) p 356.
[8] F H Etsell, S N Flengas, Chem. Rev., 70, (1970) p 739.
[9] E C Subbarao, P H Sutter, J Hrizo, J. Am. Ceram. Soc., 48, (1965) p 443.
[10] J Harreld, H P Wong, B C Dave, B Dunn, L F Nazar, J. Non-Crystalline Solids, 225, (1998) pp 319-324.
[11] Samrana Kazim, Shahzada Ahmad, Jiri Pfleger, Josef Plestil, Yogesh M Joshi, J. Mater. Sci., 47, (2012) pp 420 - 428.
[12] M V Murugendrappa, M. V. N. Ambika Prasad, J. Appl. Poly. Sci., 103, (2007) pp 2797 - 2801.
[13] V S Reddy Channu, Rudolf Holze, Ionics, 18, (2012) pp 495 - 500.
[14] S Sarmah, A Kumar, Indian J. Phys., 85(5), (2011) pp 713 - 726.
[15] M Dahlhaus and F Beck, J. Appl. Electrochemistry., 23, (1993) pp 957 - 965.
[16] T Arima, Y Tokua, J. Phys. Soc. Jpn., 64, (1995) p 2488.
[17] Chellalchamy Anbalagan Amarnath, Fouad Ghamouss, Synth. Metals., 167, (2013), pp 18 – 24.
[18] Wiqar Hussain Shah, S K Hasanain, J. Appl. Phys., 108, (2010), p 113907.
[19] X L Wang, J. Horvat, H K Liu, S X Dou, Physical Review B., 58, (1998).
[20] K Naoi, K Ueyama, T A Osaka, W H Smyrl, J. Electrochemical society., (1998), Technical report, Number 7.