Role of photoadduct of K4 Fe(CN)6 and C3 H4 N2 in improving thermal stability of polyaniline composite

Rather, M.S. and Majid, Kowsar and Wanchoo, R.K. and Singla, M.L. (2014) Role of photoadduct of K4 Fe(CN)6 and C3 H4 N2 in improving thermal stability of polyaniline composite. Journal of Thermal Analysis and Calorimetry, 117 (2). pp. 611-619. ISSN 1388-6150 (Print) 1588-2926 (Online)

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This paper involves the synthesis of polyaniline composite with photoadduct of potassium hexacyanoferrate and imidazole via photochemical route by oxidative polymerization technique by ammonium persulphate. The photoadduct has been synthesized by photoirradiation followed by substitution with imidazole ligand. The photoaquation, substitution and successful synthesis has been proved by recording pH, UV visible spectra before and after irradiation and XRD of photoadduct. The as synthesized composite has been subjected to various characterizations like elemental analysis, UV–Visible spectra, FTIR, XRD, SEM, and TG/DTG. XRD of photoadduct shows crystalline structure which has been retained in the composite, changing the amorphous structure of polyaniline into the crystalline one, hence proving the insertion of photoadduct in the polymer chain. Various parameters like crystallite size (L), interplanar distance (d), micro strain (ε), dislocation density (δ) and distortion parameters (g) were calculated from XRD data. Thermal analysis shows the high thermal stability of composite which can be due to strong interaction between polymer chain and the photoadduct which restricts the thermal motion of polyaniline and thus enhances the thermal stability of composite.

Item Type: Article
Uncontrolled Keywords: Imidazole; Photoirradiation; Thermal study; Composite; Polyaniline
Subjects: CSIO > Chemistry
Depositing User: Ms. Jyotsana
Date Deposited: 09 Aug 2018 12:09
Last Modified: 09 Aug 2018 12:09

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