Abstract

REYES-MELO, Martín Edgar et al. Synthesis and characterization of a polymeric magnetic hybrid material composed of iron oxide nanoparticles and polyvinyl butyral. Ing. invest. y tecnol. [online]. 2018, vol.19, n.1, pp.113-123. ISSN 2594-0732.  https://doi.org/10.22201/fi.25940732e.2018.19n1.010.

A Polymeric Magnetic Hybrid Material (PMHM), consisting of iron-oxide nanoparticles synthesized in-situ in a Polymer Matrix of Polyvinyl Butyral (PVB), was developed in two stages. First, a precursor film hybrid material (Fe(II)-PVB) was obtained. In the second stage, Fe(II)-PVB was treated with H2O2 under alkaline conditions to obtain the PMHM. Characterization by XRD shows that the crystalline structure of iron oxide into PMHM corresponds to goethite, and to maghemite or magnetite phases. FTIR-spectroscopy reveal that the PVB-matrix preserves its chemical structure into the PMHM. HRTEM-images show that iron oxide nanoparticles (~5 nm) with sphere-like morphology are embedded into PVB-matrix; and diagrams of magnetization versus temperature, show that embedded nanoparticles have a superparamagnetic-like behavior. Finally, magnetorheological results show that mechanical properties of PMHM can be modified under the application of an external magnetic field, showing that it is a good alternative to carry out functions as actuator or sensor in electronic or mechatronic devices.

Keywords : magnetic properties; hybrid material; polymer; nanoparticles; iron oxide.

        · abstract in Spanish     · text in English     · English ( pdf )