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Role of photoadduct of K4Fe(CN)6 and C3H4N2 in improving thermal stability of polyaniline composite

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Abstract

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.

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Acknowledgements

The authors are grateful to Department of Science and Technology, Government of India for financial assistance to carry out this research work under research project No: (SR/NM/NS-97/2008). One of the authors Mr. Mohammad Sideeq Rather is highly thankful to University Grants Commission for the award of fellowship. The authors are also grateful to Prof Rajat Gupta, Director, NIT Srinagar and Dr S A Shah, Head, Department of Chemistry for their help and support.

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Authors and Affiliations

  1. Department of Chemistry, National Institute of Technology Srinagar, Hazratbal (J&K), 190 006, India

    Mohammad Sideeq Rather & Kowsar Majid

  2. University Institute of Chemical Engineering and Technology, Punjab University, Chandigarh, 160 014, India

    Ravinder Kumar Wanchoo

  3. Material Research Division, Central Scientific Instruments Organization (CSIO), CSIR, Sector-30C, Chandigarh, 160 030, India

    Madan Lal Singla

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  1. Mohammad Sideeq Rather
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  2. Kowsar Majid
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  3. Ravinder Kumar Wanchoo
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Correspondence to Kowsar Majid.

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Rather, M.S., Majid, K., Wanchoo, R.K. et al. Role of photoadduct of K4Fe(CN)6 and C3H4N2 in improving thermal stability of polyaniline composite. J Therm Anal Calorim 117, 611–619 (2014). https://doi.org/10.1007/s10973-014-3834-z

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  • DOI: https://doi.org/10.1007/s10973-014-3834-z

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