Hairul Abral, Arif Kurniawan, Dieter Rahmadiawan, Dian Handayani, Eni Sugiarti, Ahmad Novi Muslimin
This work characterized bacterial cellulose (BC)/Uncaria gambir (G) biocomposite film prepared with ultrasonication treatment. Films were prepared from BC powder suspensions in distilled water without and with various loadings (0.05 g, 0.1 g, 0.2 g, 2 g) of G powder then treated using an ultrasonic probe at 1000 W for one hour. The results revealed that the ultrasonication treatment of the suspension greatly increased tensile strength (TS), elongation at break (EB), and toughness (TN) of a BC film by 3097%, 644%, and 32,600%, respectively, compared to non-sonicated BC film. After adding 0.05 g G into the sonicated BC powder suspension, TS, EB, and TN of the biocomposite film were improved to 105.6 MPa, 14.3%, and 8.7 MJ/m3, respectively. The addition of the G increased in antimicrobial activity of the film. This study indicates that biocomposite film is potentially useful for nanopaper production with good antimicrobial and high tensile properties. © 2022
Laboratory of Nanoscience and Technology, Department of Mechanical Engineering, Andalas University, Padang, 25163, Indonesia; Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Padang, Indonesia; Laboratory of Sumatran Biota, Faculty of Pharmacy, Andalas University, Sumatera Barat, Padang, 25163, Indonesia; Laboratory of High-Temperature Coating, Research Center for Physics Indonesian Institute of Sciences (LIPI) Serpong, Indonesia
