Document Type : research article

Authors

1 Chemical Industrial Research Division, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O. 12622, Egypt

2 Cellulose and Paper Department, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O. 12622, Egypt

3 Physics Division, Department of Solid State, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O. 12622, Egypt

4 Chemistry Departments, Faculty of Science, The University of Jordan, Amman, 11942, Jordan

5 Hamdi Mango Centre for Scientific Research (HMCSR), The University of Jordan, Amman, Jordan

Abstract

This work deals with the preparation of polyacetal (PAC)/graphene nano-platelets (GNP) and/or polypyrrole (PPY) in the presence of cobalt acetate-based composites. These materials were simply prepared via in situ emulsion in combination with sonication strategy technique. The resulting composites were characterized via Fourier transform infrared spectroscopy, thermogravimetric analysis, transmitting electron microscope, and particle size distribution analysis using dynamic light scattering technique. PAC was prepared through the reaction of cellulose with benzaldehyde. The results indicated that GNP could be successfully suspended in PAC in the presence of epichlorohydrin as a crosslinker and/or PPY as a conducting polymer. PAC/GNP-based composites had a particle size around 298 nm. However, the size was increased to 984–1338 nm after the addition of polypyrrole. The prepared composites were analyzed via the dielectric constants (ε′), dielectric losses (ε″), and AC conductivities. The composite samples containing GNP, polyacetal/GNP, and polyacetal/GNP/polypyrrole showed superior conductivities about, 0.6 and 0.022 S/cm, respectively, relative to the other ones they can be used for electrical energy storage devices.

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