Polyacetal/graphene/polypyrrole and cobalt nanoparticles electroconducting composites
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RESEARCH
Polyacetal/graphene/polypyrrole and cobalt nanoparticles electroconducting composites Ahmed A. Haroun1 · Samir Kamel2 · Amany M. Elnahrawy3 · Ali A. Hammad3 · Imad Hamadneh4 · Ammar H. Al‑Dujaili5 Received: 2 June 2019 / Accepted: 7 August 2020 © Islamic Azad University 2020
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.
* Ammar H. Al‑Dujaili [email protected] 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
13
Vol.:(0123456789)
International Journal of Industrial Chemistry
Graphic abstract
Keywords Cellulose · Polyacetal · Graphene nano-platelets · Polypyrrole · Electroconducting
Introduction The demands for electrically conductive materials continue to increase, and this has driven an interest in polymers filled with metal particles that can deliver improved electrical performance with reduced cost. Polymer nanocomposites are a growing research field in today’s society. Since polymers form an insulation barrier around the metal particles, the conductive composite cannot deliver the intrinsic conductivity of the metal. So, highly-conductive metals and polymers represent a new platform of conductive materials composite [1, 2]. It is well known that ionic polymer composites with a conductive medium (metals or other conductive materials) can exhibit large dynamic deformation if placed in an alternating electric field (A
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