Mimin Nurul Kholifah, Sunaryono, Nandang Mufti, Siti Zulaikhah, Siriwat Soontaranon
The Fe3-xZn x O4-PEG/Carboxymethyl Cellulose/Polyvinyl Alcohol (Fe3-xZn x O4-PEG/CMC/PVA) magnetic hydrogel has been successfully synthesized through the freezing-thawing process. The filler of Fe3-xZn x O4 nanoparticles has been successfully fabricated using the coprecipitation method. The investigation of nanostructural characteristic of Fe3-xZn x O4-PEG/CMC/PVA magnetic hydrogel was conducted using X-Ray Diffractometer (XRD), TEM, and Small Angle X-ray Scattering (SAXS) spectrometer to analyse the structure of crystal, morphology of Fe3-xZn x O4-PEG/CMC/PVA nanoparticles, and nanostructural behaviour of Fe3-xZn x O4 distribution in the Fe3-xZnxO4-PEG/CMC/PVA magnetic hydrogel The addition of Zn doping into Fe3-xZn x O4 nanoparticles with the variation of compositions of x = 0.65, 0.75, and 0.85 has been done and caused the shifting of the peak of diffraction angle to the smaller diffraction angle as the addition of x composition. Through the X-ray analysis, it can be found that the sizes of Fe3-xZn x O4 nanoparticles crystal in the Fe3-xZn x O4-PEG/CMC/PVA magnetic hydrogel were around 10 - 12 nm. These data were in line with the data analysis using SAXS, especially the value of secondary particles from the Fe3-xZn x O4 magnetic filler with the values of about ∼ 9 nm. Meanwhile, the values of Fe3-xZn x O4 primary particles were about ∼ 2 nm. The data of the distribution of Fe3-xZnxO4-PEG magnetic nanoparticles in the Fe3-xZnxO4-PEG/CMC/PVA magnetic hydrogel were also supported by the characterization of the nanoparticles filler morphology using TEM showing the number of about 9 - 11 nm. The tissue of PEG/CMC/PVA polymer was effective enough in inhibiting the aggregation of Fe3-xZn x O4 filler nanoparticles so that they could be equally distributed in the Fe3-xZn x O4-PEG/CMC/PVA magnetic hydrogel. © Published under licence by IOP Publishing Ltd.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Center of Advanced Materials for Renewable Energy (CAMRY), Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Synchrotron Light Research Institute, Muang, Nakhon Ratchasima, 30000, Thailand
