Structure, thermal stability and Electrical Properties of Cellulose-6-Phosphate : Development of a Novel Fast Na-ionic Conductor

Riadh Marzouki, Ameni Brahmia, Qana A. Alsulami, Sherif M.A.S. Keshk, Abdul-Hamid Emwas, Mariusz Jaremko, Mohamed Faouzi Zid, Thomas Heinze

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3 Scopus citations

Abstract

In this study, alkali cellulose-6-phosphate (A-CP) was prepared by the treatment of cellulose-6-phosphate (CP) with an aqueous solution of sodium hydroxide. X-Ray Diffraction (XRD), Fourier Transform Infrared (FTIR), 13C, 31P, and 23Na Nuclear Magnetic Resonance (NMR) spectroscopies were used to characterize the studied polymers. The CP and A-CP crystallize in the monoclinic system of the P21 space group (cellulose Iβ). CP and A-CP, with relative densities of 70% and 77%, respectively, were shaped into cylindrical pellets by uniaxial pressing and sintering at 423 K of the A-CP. Electrical conductivity measurements of CP and A-CP were carried out using complex impedance spectroscopy between 298 K and 433 K in the frequency range of 13 MHz - 5 Hz. The influence of aqueous NaOH on the structure, thermal stability, and electrical conductivity of cellulose phosphate was observed. In contrast to CP, A-CP was stable up to temperatures exceeding 433 K and showed fast ionic conductivity σ393 K = 2.03 × 10−6 S.cm−1 with an activation energy (Ea) of 0.73 eV.
Original languageEnglish (US)
JournalPolymer International
DOIs
StatePublished - Jan 26 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-02-21
Acknowledgements: The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through the project research program under grant number (G.R.P-159-39). Mariusz Jaremko would like to thank King Abdullah University of Science and Technology (KAUST) for financial support.

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