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Uniformly Embedded Cellulose/Polypyrrole-TiO2 Composite in Sol-Gel Sodium Silicate Nanoparticles: Structural and Dielectric Properties

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Abstract

Modified composites based on cellulose filled with nano-particles of sodium silicate forming cellulose/polypyrrole-TiO2/ sodium silicate nanocomposite were prepared by combining a colloidal sol–gel technique and in-situ oxidative chemical polymerization. The effect of polypyrrole content, processing and the coating by the sodium silicate nanoparticles on the morphology and structure of the prepared composites were studied. The method of processing used was proven to be efficient to uniformly disperse the nano-particles within the polymeric matrix. The dielectric properties, including dielectric constant, \(\varepsilon ^{\prime } (\omega )\), dielectric loss, \(\varepsilon ^{\prime \prime }(\omega )\), tan δ and ac conductivity, σac, of the obtained composites were studied.

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Acknowledgements

The authors acknowledge the Science and Technology Development Fund (STDF), Egypt and Scientific Research Support Fund (SRSF), Jordan for financial support of the research activities related to this project; Project ID 22929.

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Authors and Affiliations

  1. Solid State Physics Department, Physics Research Division, National Research Center, 33 El Bohouthst., P.O. 12622, Dokki, Giza, Egypt

    Amany M. El Nahrawy & Ali B. Abou Hammad

  2. Industrial Research Division, National Research Center, 33 El Bohouthst., P.O. 12622, Dokki, Giza, Egypt

    Ahmed A. Haroun

  3. Cellulose and Paper Department, National Research Center, 33 El Bohouthst., P.O. 12622, Dokki, Giza, Egypt

    Mohamed A. Diab & Samir Kamel

Authors
  1. Amany M. El Nahrawy
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  2. Ahmed A. Haroun
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  3. Ali B. Abou Hammad
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  4. Mohamed A. Diab
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  5. Samir Kamel
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Correspondence to Amany M. El Nahrawy.

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Nahrawy, A.M.E., Haroun, A.A., Hammad, A.B.A. et al. Uniformly Embedded Cellulose/Polypyrrole-TiO2 Composite in Sol-Gel Sodium Silicate Nanoparticles: Structural and Dielectric Properties. Silicon 11, 1063–1070 (2019). https://doi.org/10.1007/s12633-018-9910-4

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  • DOI: https://doi.org/10.1007/s12633-018-9910-4

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