Optimalization of Freezing-Thawing Process in Enhancing Magnetic Properties of Fe3O4/PAA/PVA Magnetic Hydrogel Composites

4th International Conference on Advanced Materials Science and Technology

Sunaryono^1,2 ; Hifdziyah, H.^1 ; Taufiq, A.^1,2 ; Diantoro, M.^1,2 ; Mufti, N.^1,2

Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, State University of Malang, Jl. Semarang 5, Malang

65145, Indonesia^1

Center for Minerals and Advanced Materials, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, State University of Malang, Jl. Semarang 5, Malang

65145, Indonesia^2

关键词: Distribution patterns;    Fe3O4;    Fe3O4 nanoparticles;    Freezing thawing cycles;    Magnetic characteristic;    Magnetic hydrogels;    Vibrating sample magnetometer;    X ray diffractometers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/202/1/012007/pdf
DOI  :  10.1088/1757-899X/202/1/012007

来源: IOP

【 摘 要 】

Magnetic hydrogel composites of Fe3O4/polyacrylic acid (PAA)/polyvinyl alcohol (PVA) have been successfully fabricated through a freezing-thawing cycle method. The natural iron sand-based Fe3O4filler nanoparticle has been successfully synthesized through coprecipitation at a room temperature. The crystal structure and the morphology of the Fe3O4nanoparticle were investigated by using X-ray Diffractometer (XRD), and Transmission Electron Microscopy (TEM), respectively. The study of magnetic characteristics of the Fe3O4/PAA/PVA magnetic hydrogel composites were characterized by using Vibrating Sample Magnetometer (VSM). Based on the quantitative analysis, the morphology of Fe3O4filler characterized by using TEM has a particle size around of 8 nm. This result was well confirmed with the analysis of the XRD and VSM data. Additionally, the study of the magnetic properties of the Fe3O4/PAA/PVA magnetic hydrogel composites decreased saturation magnetization significantly with the increase of the number of freezing-thawing cycles. This result indicated that the distribution pattern of the Fe3O4filler in the magnetic hydrogel composites was more optimal when the process of freezing-thawing reached seven times cycles.