Methodology for determination of magnetic force of polymeric nanocomposites

Magnetic nanocomposites present several interesting uses. They are very useful in environmental recovery, drug delivery and sensor applications. However, sophisticated magnetic measurements are very complex and present high costs, which may sometimes prevent research on these materials. Therefore, t...

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Bibliographic Details
Published in:Polymer testing 2013-12, Vol.32 (8), p.1466-1471
Main Authors: Souza, F.G., Ferreira, A.C., Varela, A., Oliveira, G.E., Machado, F., Pereira, E.D., Fernandes, E., Pinto, J.C., Nele, M.
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Costs
Drug delivery systems
Exact sciences and technology
Forms of application and semi-finished materials
Fourier transforms
Maghemite nanoparticles
Magnetic fields
Magnetic force test
Magnetic measurement
Magnetic nanocomposites
Magnetic permeability
Magnetic susceptibility
Nanocomposites
Polymer industry, paints, wood
Properties and testing
SAXS
Technology of polymers
Testing and control
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Summary:Magnetic nanocomposites present several interesting uses. They are very useful in environmental recovery, drug delivery and sensor applications. However, sophisticated magnetic measurements are very complex and present high costs, which may sometimes prevent research on these materials. Therefore, this paper presents a magnetic force test, which can be performed at relatively low cost and produces interesting results, which are very useful to support the development of these magnetic materials. Specifically, polylactic acid (PLA)/maghemite nanocomposites were prepared and characterized using Fourier transform infrared (FTIR) spectroscopy, wide-angle X-ray scattering (WAXS), small-angle X-ray scattering (SAXS) and size-exclusion chromatography (SEC). Our results demonstrate that nanocomposites, were obtained, which were also subjected to the magnetic force and magnetic susceptibility tests. The results of these latter tests were found to be linearly related, which proves the utility of the magnetic force test as a practical characterization technique.
ISSN:0142-9418
1873-2348
DOI:10.1016/j.polymertesting.2013.09.018