Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 378, Issue -, Pages 64-72Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2014.10.171
Keywords
Nanocomposite; Dynamic magnetic susceptibility; Transmission electron microscopy; Flory-Huggins interaction parameter; Nanoparticles; Polymer melts
Funding
- US National Science Foundation [CBET-1033493/1439963, EPS-1002410]
- NSF [0701525]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1439963] Funding Source: National Science Foundation
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Aggregation of magnetic nanoparticles in polymer melts was assessed using dynamic magnetic susceptibility measurements. Magnetic nanocomposites consisting of polybutadiene/CoFe2O4 and polystyrene/CoFe2O4 mixtures were prepared using different techniques and characterized using dynamic magnetic susceptibility measurements. The presence of nanoparticle aggregates determined using magnetic measurements was confirmed with transmission electron microscopy examinations. The results were in good agreement with predictions from the Flory-Huggins interaction parameters. (C) 2014 Elsevier B.V. All rights reserved.
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