FABRIKASI FERROGEL BERBAHAN DASAR NANOPARTIKEL MAGNETIT (Fe3O4) DARI HASIL SINTESIS PASIR BESI PANTAI UTARA JAWA DAN SIFAT MAGNETO-ELASTISITASNYA
Abstract: Iron sand is one of
natural materials that has been widely explored and so far is only used
as building materials. This research provides solutions to increase the
economic values of iron sand, by preparing ferrogel from iron sand. The purpose
of this research is to prepare Fe3O4 nanoparticles-based-ferrogel from synthetic
Fe3O4 prepared from
iron sand. The
iron sand was obtained from north coast of Central
Java. The preparation of synthetic Fe3O4 produced nanoparticles having a size
of 82,42 – 110,9 nm . The characterization using XRD indicated that Fe2O4
content in the iron sand was 30%, and increased to 76% in the synthetic
materials. In addition, the synthetic materials has additional phase of Al0.95 Ga0.05.
The ferrogel was prepared by mixing the synthetic materials with PVA
(Polyphinyl alcohol). The ferrogel was characterized for its magnetoelasticity
properties so that it can be used for artificial muscles. The results of
magneto-elasticity ferrogel characterization showed that the higher the
concentration of Fe3O4 filler in PVA matrix, the higher the deviation and
elongation. However, the impurity of Al0.95 Ga0.05 in the ferrogel seemed to
cause its magnetoelasticity to be less than optimum.
Penulis: Retno Rahmawati,
Handayani
Kode Jurnal: jpfisikadd130266
