Indian Journal of Pure and Applied Physics

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Polyaniline Chromium Nitrate Composites : Influence of Chromium Nitrate on Conductivity and Thermal Stability of Polyaniline


Affiliations
1 Department of Basic and Applied Sciences, Bhagat Phool Singh Mahilla Vishwavidyalaya, Khanpur Kalan (Sonipat), Haryana-131 305, India
2 Department of Physics, Guru Jambheshwar University of Science and Technology, Hisar, Haryana-125 001, India
3 Department of Chemistry, Shri Govind Singh Gurjar Government College, Nasirabad, Ajmer, Rajasthan-305 601, India
4 CSIR-National Physical Laboratory, New Delhi 110 012, India
5 Department of Chemistry, Maharashi Dayanand University, Rohtak, Haryana-124 001, India
 

Thermal stability and electrical conductivity are the key to the technological feasibility and sustainability of conducting polymers (CPs) and their composites in real-time applications. Notably, the impact of filler loading on above mentioned parameters of CPs needs to be examined and addressed with facile and easily accessible techniques. In the present study, Polyaniline (PANI) /chromium nitrate composites have been prepared via in situ polymerization of aniline through the chemical oxidative polymerization route. After that, the conductivity and thermal stability of PANI have been investigated at different weight percentage loadings of chromium nitrate viz 5, 10, 20, and 40 % in the composite materials. The morphological and structural analysis of the pristine and composite samples were executed with Scanning electron microscopy (SEM), Fourier transforms infrared (FTIR) spectroscopy, and X-ray diffraction (XRD) techniques. Thermal analysis of proposed composites is carried out using the thermogravimetric analysis (TGA) method to evaluate various kinetic parameters. The TGA thermogram and different calculated parameters revealed that the composites were more thermally stable than pristine PANI and that the composite having 20 wt % of chromium nitrate is thermally the most stable. The DC electrical conductivity data shows that PANI loaded with 20% chromium nitrate has the highest conductivity. This increment in conductivity and thermal stability of the composites opens the path for many applications, such as sensors and electronics.

Keywords

Polyaniline, Chromium Nitrate, Structural Characterization, Thermal Stability, DC Electric Conductivity.
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  • Polyaniline Chromium Nitrate Composites : Influence of Chromium Nitrate on Conductivity and Thermal Stability of Polyaniline

Abstract Views: 62  |  PDF Views: 62

Authors

Asha
Department of Basic and Applied Sciences, Bhagat Phool Singh Mahilla Vishwavidyalaya, Khanpur Kalan (Sonipat), Haryana-131 305, India
Sneh Lata Goyal
Department of Physics, Guru Jambheshwar University of Science and Technology, Hisar, Haryana-125 001, India
Rishi Pal
Department of Physics, Guru Jambheshwar University of Science and Technology, Hisar, Haryana-125 001, India
Shashi Kala Gupta
Department of Chemistry, Shri Govind Singh Gurjar Government College, Nasirabad, Ajmer, Rajasthan-305 601, India
Rahul Sharma
CSIR-National Physical Laboratory, New Delhi 110 012, India
Rachna Dhankhar
Department of Chemistry, Maharashi Dayanand University, Rohtak, Haryana-124 001, India

Abstract


Thermal stability and electrical conductivity are the key to the technological feasibility and sustainability of conducting polymers (CPs) and their composites in real-time applications. Notably, the impact of filler loading on above mentioned parameters of CPs needs to be examined and addressed with facile and easily accessible techniques. In the present study, Polyaniline (PANI) /chromium nitrate composites have been prepared via in situ polymerization of aniline through the chemical oxidative polymerization route. After that, the conductivity and thermal stability of PANI have been investigated at different weight percentage loadings of chromium nitrate viz 5, 10, 20, and 40 % in the composite materials. The morphological and structural analysis of the pristine and composite samples were executed with Scanning electron microscopy (SEM), Fourier transforms infrared (FTIR) spectroscopy, and X-ray diffraction (XRD) techniques. Thermal analysis of proposed composites is carried out using the thermogravimetric analysis (TGA) method to evaluate various kinetic parameters. The TGA thermogram and different calculated parameters revealed that the composites were more thermally stable than pristine PANI and that the composite having 20 wt % of chromium nitrate is thermally the most stable. The DC electrical conductivity data shows that PANI loaded with 20% chromium nitrate has the highest conductivity. This increment in conductivity and thermal stability of the composites opens the path for many applications, such as sensors and electronics.

Keywords


Polyaniline, Chromium Nitrate, Structural Characterization, Thermal Stability, DC Electric Conductivity.

References