Heru Suryanto, Uun Yanuhar, Jibril Maulana, Yanuar Rohmat Aji Pradana
Pineapple waste is one of the problems in Indonesia as a larger producer country of this fruit. Pineapple waste is used as a fermentation medium for bacterial cellulose synthesis. The study aims to obtain the effect of the addition of surfactant on the properties of bacterial cellulose (BC) based composite foam with the addition of Copper Oxide (CuO) nanoparticles. The methods were conducted using pineapple peel extract as a medium of BC synthesis. BC pellicle product was disintegrated using a high-pressure homogeniser, and then BC composite foam was produced in the presence of CuO nanoparticles. The surfactant of Polyethylene glycol (PEG) 4000 and Cetyltrimethylammonium Bromide (CTAB) was used. The foaming structure was produced using freeze-drying methods. The foam structure was observed by Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD) and Fourier Transform Infra-Red (FTIR). The SEM result showed that the CTAB as a surfactant makes a more homogenous porosity in the bacterial cellulose. The diffractogram indicates presented crystal peak found at 14°, 16°, 22°, and 28o as cellulose fingerprint structure, and there is a new peak in 28o, 35o and 38o after the addition of surfactant. The FTIR test showed that the surfactant treatment did not significantly change the bacterial cellulose bonds. © 2021 School of Science, IHU. All rights reserved.
Centre of Excellence for Cellulose Composite (CECCom), Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Centre of Advanced Material for Renewable Energy (CAMRY), Universitas Negeri Malang, East Java, Indonesia; Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, Brawijaya University, East Java, Jl. Veteran Malang, Indonesia
