Indonesia Conference Directory

Last few years magnetic hydrogel called ferrogel was widely investigated for application in important fields such as in food industry and bio medic. This application is based on good properties which are owned by the ferrogel, for instance, good biocompatibility of the components and stimuli-responsive of the magnetic component. Ferrogel composed by magnetic nanoparticles filler inside the polymer hydrogel. This research focused on Polyvinyl Pyrrolidone/Polyvinyl Alcohol (PVP/PVA) hydrogel polymer with the filler of polyethylene glycol (PEG) MnxFe3-xO4-PEG which is rarely reported. The XRD and SAXS characterizations were used to analyzed the nanostructure of sample. The Mn concentration used was x = 0.6 which has particle size about 11.12 nm analyzed using XRD and has well confirmed with TEM result about 9.9 nm. Analysis using SAXS from ferrogel with filler variations yields primary and secondary particle size about 3.3 and 9.8 nm respectively. The optical properties of MnxFe3-xO4-PEG powder sample characterized using UV-Vis which is shown with the energy gap about 2.24 eV and refractive index 2.79. Using these data, the optical and electrical conductivity can be calculated each about 1.2 × 108 and 70 S. By this analysis then can be the fundamental study for the optical application of MnxFe3-xO4-PEG.