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<strong>Activation parameters of conjugated polyaniline electrolyte via dielectric relaxation technique</strong>

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Title Statement <strong>Activation parameters of conjugated polyaniline electrolyte via dielectric relaxation technique</strong>
 
Added Entry - Uncontrolled Name Amaechi, Ifeanyichukwu
Balogun, Bashiru
Nwachukwu, Michael
Sousa, Celia
Kakazei, Gleb
Araújo, João
Osuji, Rose
Nil
 
Uncontrolled Index Term term3
Dielectric relaxation; Enthalpy; Electrical conductivity; Gibbs free energy
 
Summary, etc. The synthesis and relaxation mechanism of polyaniline electrolyte in form of thin film by oxidative polymerization in the presence of inorganic acid have been reported. The films have been characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, 2-point probe and UV-Vis absorption spectroscopy. The mechanism of electrical conductivity for the disordered system has been explained in terms of Mott’s variable-range hopping for the intrinsic conduction of the protonated long chain. The dielectric parameters including real part, imaginary part and loss tangent have been measured between the wavelength range 400 – 1100 nm. These have been employed in the determination of dielectric relaxation time τ which exhibits Arrhenius-like behaviour. Finally, the temperature dependent relaxation time which is a function of activation energy of dipole orientation otherwise known as Gibbs free energy ∆<em>G</em><sup>#</sup>, has been utilized in estimation of some thermodynamic parameters such as enthalpy ∆<em>H</em><sup>#</sup> and entropy ∆<em>S</em><sup>#</sup>. The SEM shows an aggregation of randomly oriented fibrous network of polyaniline on the surface of substrate. Fourier transform infrared confirms the acoustic vibrational modes of the long chain polymer.
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2018-10-22 14:42:19
 
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http://op.niscair.res.in/index.php/IJPAP/article/view/18452
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 56, ##issue.no## 10 (2018): Indian Journal of Pure & Applied Physics
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJPAP/article/download/18452/55762
 
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