Volume 5, Issue 2, June 2019, Page: 18-22
Evaluation of the Thermal Stability of Poly (O–phenylenediamine) (PoPD) by Thermogravimetric Analysis (TGA)
Nkamuo Chinwe Juliana, Department of Science Laboratory Technology, Federal Polytechnic, Oko, Nigeria
Nwokoye Anthony Osita Chibuike, Department of Physics and Industrial Physics, Nnamdi Azikiwe University, Awka, Nigeria
Ekpunobi Azubuike Josiah, Department of Physics and Industrial Physics, Nnamdi Azikiwe University, Awka, Nigeria
Received: Sep. 18, 2019;       Accepted: Oct. 5, 2019;       Published: Oct. 23, 2019
DOI: 10.11648/j.ajn.20190502.11      View  400      Downloads  87
The poly (o-phenylenediamine) (PoPD) was synthesized from the monomer o-phenylenediamine in hydrochloric acid (HCl) using potassium dichromate as an oxidant by chemical oxidation method. The prepared PoPD sample was characterized by thermogravimetric analyzer (TGA) and scanning electron microscopy (SEM). The thermogravimetric analysis (TGA) results showed that a weight loss occurred. The weight loss as a result of the thermal energy applied to the polymer sample is 9.649mg which is 85.0% of the original polymer sample. The point of the greatest rate of change on the weight loss curve (point of inflection) is found to be 275°C and is the peak temperature of the degradation of the PoPD. SEM analysis showed that the PoPD sample has particle sizes ranging from 200μm-50μm at 360 magnification, 500μm-50μm at 1000 magnification, 200μm-50μm at 1550 magnification and 500μm-150μm at 2000 magnification which revealed more unevenly dispersed particles of the poly (o-phenylenediamine) polymer at different magnifications. Therefore poly (o-phenylenediamine) has different particle sizes and is also thermally stable at a higher temperature of 150°C.
Thermal Stability, PoPD, TGA, SEM
To cite this article
Nkamuo Chinwe Juliana, Nwokoye Anthony Osita Chibuike, Ekpunobi Azubuike Josiah, Evaluation of the Thermal Stability of Poly (O–phenylenediamine) (PoPD) by Thermogravimetric Analysis (TGA), American Journal of Nanosciences. Vol. 5, No. 2, 2019, pp. 18-22. doi: 10.11648/j.ajn.20190502.11
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Aga, R. S. and Mu, R. R. (2010). Doping of polymers with ZnO nanostructures foroptoelectronic and sensor applications. In L. Nicoleta (Ed.), Nanowires Science and Technology (pp. 205-222). Romania: National Institute of Research and Development for Technical Physics.
Omar, M. and Mariam, J. (2017). Copolymerization of poly o-phenylenediamine-co-o/p Toluidinevia the chemical oxidative technique. Synthesis and characterization. Materialsand Technology, 51 (2), 283-288.
Sayyah, S. M., Khahiel, A. B., Ahmed, A. A. and Mohamed, S. M. (2014). Chemicalpolymerization kinetics of poly o-phenylenediamine and characterization of the obtainedpolymer in aqueous hydrochloric acid solution using K2Cr2O7 as oxidizing agent. International Journal of Polymer Science, 2014, 1-16.
Melad, O. (2016). Chemical oxidative synthesis of characterization of poly o- phenylenediaminedoped with different acids. European Journal of Chemistry. 7 (4), 463-467.
Hirase, R., Shikata, T. and Shirai, M. (2004). Selective formation of polyanline on wool bychemical polymerization, using potassium iodate. Synth. Met., 146, 73-77.
Gopalakrishnan, K., Elango, M. and Thamilsevan, M. (2012). 0ptical studies on nano-structuredconducting polyaniline prepared by oxidation method. Archives of Phys. Research 3, 315-319.
Molapo, K., Nlangili, P. M. and Ajayi, R. F. (2012). Electronics of conjugated polymers: Polyaniline. Int. Journal of Electrochem. Sci., 7, 11859-11875.
Salma, B. L., Anwar-ul-Haq, A. S. and Rudolf, H. (2011). Spectroelectrochemistry ofpoly (o-phenylenediamine: polyaniline-like segments in the polymer structure. EletrochimActa, 56, 3353-3358.
Muthirulan, P., Kannan, N. and Meenakshisundaram M., (2013). Synthesis and Corrosion Protection properties of Poly o- phenylenediamine nanofibers. Journal of advanced research, 4, 385-392.
Suresh, K. V., Venkatraman, B. R., Shobana, V. and Subramania, A. (2012). Polythiophene Naphthosulphonic acid: New and effective corrosion inhibitor for carbon steel in acidsolution. Research Journal of Chemical Science, 2 (10), 87-94.
Xiang, C., Xie, Q., Hu, J. and Yao, S. (2006). Studies on electrochemical copolymerization of aniline with o-phenylenediamine and degradation of the resultant copolymers viaelectrochemical quartz crystal microbalance and scanning electrochemical microscope. Synth. Met., 156, 444-453.
Kong, Y., Li, W., Wang, Z., Yao, C. and Tao, Y. (2013). Electrosorption behavior of copperions with poly m phenylenediamine paper electrode. Electrochem Comm., 26, 59-62.
Saxens, D., Dwivedi, V. and Mishra, P. K. (2013). Dielectric study of polyaniline in frequencyrange 100Hz to 500Hz at Temperature 200oC and 300oC. Research Journal of Chemical Science, 3 (2), 16-19.
Shanthi, T. and Rajendran, S. (2013). Influence of polyvinyl pyrolidone on corrosionresistance of mild steel simulated concrete pore solution prepared in well water. Research Journal of Chemical Science, 3 (9), 39-44.
Archana, S. and Jaya, S. R. (2014). Synthesis and characterization of poly (p-phenylenediamine) in the presence of sodium dodecylsulphate. Research Journal of Chemical Science, 4 (2), 60-67.
Liu, X. and Yu, W. (2006). Evaluating the thermal stability of high performance fibers byTGA. Journal of Applied Polymer Science, 99, 937-944.
Tao, Z., Jin J., Yang, S., Hu, D., Li, G. and Jiang, G. J. (2009). Synthesis and characterization offluorinated PBO with high thermal stability and low dielectric constant. Journal of Macromolecular Science, Part B, 48, 1114-1124.
Abramoff, M. D., Magalhaes, P. J. and Ram, S. J. (2004). Image processing with Image J. Biophotonic International, 11 (7), 36-42.
Browse journals by subject