American Journal of Nanosciences

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Evaluation of the Thermal Stability of Poly (O–phenylenediamine) (PoPD) by Thermogravimetric Analysis (TGA)

Received: 18 September 2019    Accepted: 05 October 2019    Published: 23 October 2019
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Abstract

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.

DOI 10.11648/j.ajn.20190502.11
Published in American Journal of Nanosciences (Volume 5, Issue 2, June 2019)
Page(s) 18-22
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Thermal Stability, PoPD, TGA, SEM

References
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Author Information
  • Department of Science Laboratory Technology, Federal Polytechnic, Oko, Nigeria

  • Department of Physics and Industrial Physics, Nnamdi Azikiwe University, Awka, Nigeria

  • Department of Physics and Industrial Physics, Nnamdi Azikiwe University, Awka, Nigeria

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    Nkamuo Chinwe Juliana, Nwokoye Anthony Osita Chibuike, Ekpunobi Azubuike Josiah. (2019). Evaluation of the Thermal Stability of Poly (O–phenylenediamine) (PoPD) by Thermogravimetric Analysis (TGA). American Journal of Nanosciences, 5(2), 18-22. https://doi.org/10.11648/j.ajn.20190502.11

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    Nkamuo Chinwe Juliana; Nwokoye Anthony Osita Chibuike; Ekpunobi Azubuike Josiah. Evaluation of the Thermal Stability of Poly (O–phenylenediamine) (PoPD) by Thermogravimetric Analysis (TGA). Am. J. Nanosci. 2019, 5(2), 18-22. doi: 10.11648/j.ajn.20190502.11

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    AMA Style

    Nkamuo Chinwe Juliana, Nwokoye Anthony Osita Chibuike, Ekpunobi Azubuike Josiah. Evaluation of the Thermal Stability of Poly (O–phenylenediamine) (PoPD) by Thermogravimetric Analysis (TGA). Am J Nanosci. 2019;5(2):18-22. doi: 10.11648/j.ajn.20190502.11

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  • @article{10.11648/j.ajn.20190502.11,
      author = {Nkamuo Chinwe Juliana and Nwokoye Anthony Osita Chibuike and Ekpunobi Azubuike Josiah},
      title = {Evaluation of the Thermal Stability of Poly (O–phenylenediamine) (PoPD) by Thermogravimetric Analysis (TGA)},
      journal = {American Journal of Nanosciences},
      volume = {5},
      number = {2},
      pages = {18-22},
      doi = {10.11648/j.ajn.20190502.11},
      url = {https://doi.org/10.11648/j.ajn.20190502.11},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.ajn.20190502.11},
      abstract = {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.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - Evaluation of the Thermal Stability of Poly (O–phenylenediamine) (PoPD) by Thermogravimetric Analysis (TGA)
    AU  - Nkamuo Chinwe Juliana
    AU  - Nwokoye Anthony Osita Chibuike
    AU  - Ekpunobi Azubuike Josiah
    Y1  - 2019/10/23
    PY  - 2019
    N1  - https://doi.org/10.11648/j.ajn.20190502.11
    DO  - 10.11648/j.ajn.20190502.11
    T2  - American Journal of Nanosciences
    JF  - American Journal of Nanosciences
    JO  - American Journal of Nanosciences
    SP  - 18
    EP  - 22
    PB  - Science Publishing Group
    SN  - 2575-4858
    UR  - https://doi.org/10.11648/j.ajn.20190502.11
    AB  - 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.
    VL  - 5
    IS  - 2
    ER  - 

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