Sunaryono Sunaryono, Nadiya Miftachul Chusna, Nandang Mufti, Ahmad Taufiq
Series of ferrogel samples have been successfully fabricated by using the freezing-thawing role. The filler used in ferrogel was magnetic material of Mn0.25Fe2.75O4/Ag synthesized by the co-precipitation method and chemical reduction. Whereas, the matrix used in ferrogel was a polymer composite of Carboxymethyl Cellulose (CMC) and Polyvinyl Alcohol (PVA). The characterization of the Mn0.25Fe2.75O4/Ag powder was carried out by using X-ray Diffraction (XRD), Vibrating Sample Magnetometer (VSM), and antibacterial activities. The Mn0.25Fe2.75O4/Ag-CMC/PVA ferrogel was successfully characterized by antibacterial activity using the agar diffusion method. The XRD pattern of the Mn0.25Fe2.75O4/Ag powder illustrates the peaks owned by Fe3O4and silver phases. Meanwhile, the magnetization hysteresis curve of the Mn0.25Fe2.75O4/Ag shows a decrease from 20.74 to 15.53 emu/g along with the addition of Ag material. Through the agar diffusion method, the Mn0.25Fe2.75O4/Ag powder and Mn0.25Fe2.75O4/Ag-CMC/PVA ferrogel samples showed excellent antibacterial activity as indicated by the widening of zones that were not overgrown with bacteria around the samples. Thus, the Mn0.25Fe2.75O4/Ag powder and Mn0.25Fe2.75O4/Ag-CMC/PVA ferrogel are potential for use in the biomedical field. © 2020 Elsevier Ltd. All rights reserved.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5, Malang, 65145, Indonesia; Center of Advanced Materials for Renewable Energy (CAMRY), Universitas Negeri Malang, Jl. Semarang No. 5, Malang, 65145, Indonesia
