Mercerization effect on structure and electrical properties of cellulose: Development of a novel fast Na-ionic conductor

Riadh Marzouki; Ameni Brahmia; Samir Bondock; Sherif M A S Keshk; Mohamed Faouzi Zid; Abdullah G Al-Sehemi; Andreas Koschella; Thomas Heinze

doi:10.1016/j.carbpol.2019.05.083

Mercerization effect on structure and electrical properties of cellulose: Development of a novel fast Na-ionic conductor

Carbohydr Polym. 2019 Oct 1:221:29-36. doi: 10.1016/j.carbpol.2019.05.083. Epub 2019 May 30.

Authors

Riadh Marzouki¹, Ameni Brahmia², Samir Bondock³, Sherif M A S Keshk⁴, Mohamed Faouzi Zid⁵, Abdullah G Al-Sehemi⁶, Andreas Koschella⁷, Thomas Heinze⁷

Affiliations

¹ Chemistry Department, College of Science, King Khalid University, Abha 61413, Saudi Arabia; Laboratory of Materials, Crystal Chemistry and Applied Thermodynamics, LR15ES01, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092, Tunisia; Chemistry Department, Faculty of Sciences of Sfax, University of Sfax, 3038, Tunisia.
² Chemistry Department, College of Science, King Khalid University, Abha 61413, Saudi Arabia; Laboratoire des Materiaux et de l'Environnement pour le Development Durable, LR18ES10, University of Tunis El Manar, 2092, Tunisia.
³ Chemistry Department, College of Science, King Khalid University, Abha 61413, Saudi Arabia; Chemistry Department, Faculty of Science, Mansoura University, 35516 Mansoura, Egypt.
⁴ Chemistry Department, College of Science, King Khalid University, Abha 61413, Saudi Arabia; Basic science department, Institute of environmental Studies and Researches, 11566, Ain Shams University, Egypt. Electronic address: skesh@kku.edu.sa.
⁵ Laboratory of Materials, Crystal Chemistry and Applied Thermodynamics, LR15ES01, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092, Tunisia.
⁶ Chemistry Department, College of Science, King Khalid University, Abha 61413, Saudi Arabia.
⁷ Friedrich Schiller University Jena, Institute of Organic Chemistry and Macromolecular Chemistry, Center of Excellence for Polysaccharide Research, Humboldtstr. 10, D-07743 Jena, Germany.

PMID: 31227164
DOI: 10.1016/j.carbpol.2019.05.083

Abstract

Mercerized cellulose (alkali cellulose C₆H₁₀O₅* NaOH) was obtained by treatment of cotton linters (cellulose) with aqueous sodium hydroxide. Cellulose and alkali-cellulose samples with relative density of 78% and 79% were obtained after sintering the material in air at optimal sintering temperatures of 423 K and 473 K, respectively. The electrical properties of the samples were studied by impedance spectroscopy in the frequency range from 13 MHz to 50 Hz at temperatures between 393 K and 493 K. The influence of cellulose mercerization on electrical properties of cotton linters was observed. The cellulose behaves like an electrical insulator. Contrariwise, the alkali-cellulose is a fast-ionic conductor with a conductivity value of σ_{473 K} = 3.22 × 10^-6 S cm^-1 having activation energies of 0.49 eV and 0.68 eV at temperature range of 393 K-458 K and 459 K-500 K, respectively. The change of activation energy value has been discussed in relation to thermal stability.

Keywords: Alkali-cellulose; Cellulose; Electrical property; Mercerization; Structure; Thermal stability.