Dieter Rahmadiawan, Hairul Abral, Rafi Alzues Kotodeli, Eni Sugiarti, Ahmad Novi Muslimin, Ratna Isnanita Admi, Andril Arafat, Hyun-Joong Kim, S.M. Sapuan, Engkos Achmad Kosasih
Developing a conductive cellulose film without any metal compounds remains challenging, though in great demand. However, cellulose film prepared from bacterial cellulose (BC) powder without any metal compounds has poor tensile, physical, and electrical properties, thus limiting its application. Herein, this study aims to prepare and characterize an all-cellulose film from 2,2,6,6-Tetramethylpiperidin-1-yl)oxyl (TEMPO)-oxidized bacterial cellulose (TOBC) powders without adding metal compounds and treated by ultrasonication. TOBC powders are sonicated with various powers of 250, 500, and 750 W for 20 min without any other substance. It was proved that increasing the ultrasonication power level resulted in a significant improvement in the properties of the film. The ultrasonication of 750 W increased tensile strength by 85%, toughness by 308%, light transmittance by 542%, and electrical conductivity by 174% compared to the nonsonicated film. A light-emitting diode connected to a power source through this sonicated film was much brighter than that connected via a nonsonicated film. For the first time, this study reports the preparation of electrically conductive, transparent, strong, and bendable pure TOBC films by increasing ultrasonic power for environmentally friendly electronic devices application. © 2023 by the authors.
Department of Mechanical Engineering, Universitas Negeri Padang, Padang, 25173, Indonesia; Laboratory of Nanoscience and Technology, Department of Mechanical Engineering, Andalas University, Padang, 25163, Indonesia; Research Collaboration Center for Nanocellulose, BRIN-Andalas University, Padang, 25163, Indonesia; Laboratory of High-Temperature Coating, Research Center for Physics, Indonesian Institute of Sciences (LIPI) Serpong, Banten, 15314, Indonesia; Faculty of Defense Technology, Indonesia Defense University, Bogor, 16810, Indonesia; Laboratory of Adhesion & Bio-Composites, Program in Environmental Materials Science, Research Institute for Agriculture & Life Sciences, Seoul National University, Seoul, 151-921, South Korea; Advanced Engineering Materials and Composites Research Centre (AEMC), Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia (UPM), Serdang, 43400, Malaysia; Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI, Depok, 16424, Indonesia
