Novel green flexible rice straw nanofibers/zinc oxide nanoparticles films with electrical properties.

Autor: El-Wahab RMA; Physical Chemistry Department, National Research Centre, 33 El Bohouth Street, Dokki, Giza, 12622, Egypt., Fadel SM; Cellulose and Paper Department, National Research Centre, 33 El Bohouth Street, Dokki, Giza, 12622, Egypt., Abdel-Karim AM; Physical Chemistry Department, National Research Centre, 33 El Bohouth Street, Dokki, Giza, 12622, Egypt., Eloui SM; Inorganic Chemistry Department, National Research Centre, 33 El Bohouth Street, Dokki, Giza, 12622, Egypt., Hassan ML; Cellulose and Paper Department, National Research Centre, 33 El Bohouth Street, Dokki, Giza, 12622, Egypt. ml.hassan@nrc.sci.eg.; Advanced Materials and Nanotechnology Group, Centre of Excellence for Advanced Sciences, National Research Centre, 33 El Bohouth Street, Dokki, Giza, 12622, Egypt. ml.hassan@nrc.sci.eg.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2023 Feb 02; Vol. 13 (1), pp. 1927. Date of Electronic Publication: 2023 Feb 02.
DOI: 10.1038/s41598-023-28999-x
Abstrakt: In the current work, rice straw nanofibers (RSNF) with the width of elementary fibrils (~ 4-5 nm) were isolated from rice straw. The isolated nanofibers were used with zinc oxide nanoparticles (ZnONPs) to prepare flexible nanopaper films. Tensile strength and electrical properties of the prepared RSNF/ZnONPs nanopaper were investigated. The addition of ZnONPs to RSNF nanopaper did not deteriorate its mechanical properties and showed a slight improvement in tensile strength and Young's modulus of about 14% and 10%, respectively, upon the addition of 5% of ZnONPs. Microscopy investigation using scanning electron microscopy (SEM) showed the inclusion of the ZnONPs within the RSNF. Electrical conductivity and dielectric properties as a function of frequency at different temperatures were studied. The ac-electrical conductivity increased with frequency and fitted with the power law equation. The dc- electrical conductivity of the samples verified the Arrhenius equation and the activation energies varied in the range from 0.9 to 0.42 eV. The dielectric constant decreased with increasing frequency and increased with increasing temperature, probably due to the free movement of dipole molecular chains within the RSNF nanopaper. The high values of the dielectric constant and conductivity of the prepared nanopaper films support their use in electronic components.
(© 2023. The Author(s).)
Databáze: MEDLINE
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