Azza Ward
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Azza Ward has a total of 2 co-authors. Here are the top co-authors by number of shared publications:
- Mohammad L. Hassan
Cellulose and Paper Department, National Research Centre, Dokki, Giza, 12622, Egypt
1 shared publication - Wafaa Abou-Elseoud
Cellulose and Paper Department, National Research Centre, 33 El-Behouth Street, Dokki, Giza 12622, Egypt
1 shared publication
Latest Publications
- 21 September 2022
- Published by Wiley in Journal of Applied Polymer Science
- Vol. 139 (45)
High‐lignin‐content rice straw cellulose nanofibers/graphene oxide nanocomposites films: Electrical and mechanical properties
Rice straw nanofibers (RSNF) with high lignin content were used in making nanocomposites with graphene oxide (GO) at loading ratios from 0.625% to 5% (based on weight of RSNF). The prepared RSNF/GO films were characterized regarding their tensile strength, equilibrium moisture content (EMC), and electrical properties. Microstructure of the films was examined using scanning electron microscopy (SEM). Addition of 2.5% of GO resulted in increasing tensile strength and Young's modulus by 33.5% and 21.5%, respectively. Presence of GO significantly reduced moisture sorption of the films. Electrical conductivity measurement showed significant increase in permittivity ( ε ′) upon increasing GO loading. The ionic conductivity value of films containing 5% of GO was 10 −7 S cm −1 , which is acceptable value for use as antistatic and/or dissipated films. The electrical properties of the prepared low‐cost high‐lignin‐content RSNF/GO films could have potential use in flexible electronic applications such as in energy harvesting and storage.
- 21 September 2022
- Published by Wiley in Journal of Applied Polymer Science
- Vol. 139 (45)
High‐lignin‐content rice straw cellulose nanofibers/graphene oxide nanocomposites films: Electrical and mechanical properties
Rice straw nanofibers (RSNF) with high lignin content were used in making nanocomposites with graphene oxide (GO) at loading ratios from 0.625% to 5% (based on weight of RSNF). The prepared RSNF/GO films were characterized regarding their tensile strength, equilibrium moisture content (EMC), and electrical properties. Microstructure of the films was examined using scanning electron microscopy (SEM). Addition of 2.5% of GO resulted in increasing tensile strength and Young's modulus by 33.5% and 21.5%, respectively. Presence of GO significantly reduced moisture sorption of the films. Electrical conductivity measurement showed significant increase in permittivity ( ε ′) upon increasing GO loading. The ionic conductivity value of films containing 5% of GO was 10 −7 S cm −1 , which is acceptable value for use as antistatic and/or dissipated films. The electrical properties of the prepared low‐cost high‐lignin‐content RSNF/GO films could have potential use in flexible electronic applications such as in energy harvesting and storage.