1. Flexible high-loading particle-reinforced polyurethane magnetic nanocomposite fabrication through particle-surface-initiated polymerization
- Author
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Monica Moldovan, Amar B. Karki, Suying Wei, Zhanhu Guo, H. Thomas Hahn, Tony Pereira, David P. Young, and Sung Park
- Subjects
chemistry.chemical_classification ,Materials science ,Nanocomposite ,Mechanical Engineering ,Analytical chemistry ,Physics::Optics ,Nanoparticle ,Bioengineering ,General Chemistry ,Polymer ,Condensed Matter::Soft Condensed Matter ,Condensed Matter::Materials Science ,chemistry ,Polymerization ,Mechanics of Materials ,Differential thermal analysis ,Particle ,Magnetic nanoparticles ,General Materials Science ,Electrical and Electronic Engineering ,Magnetic force microscope ,Composite material - Abstract
Flexible high-loading nanoparticle-reinforced polyurethane magnetic nanocomposites fabricated by the surface-initiated polymerization (SIP) method are reported. Extensive field emission scanning electron microscopic (SEM) and atomic force microscopic (AFM) observations revealed a uniform particle distribution within the polymer matrix. X-ray photoelectron spectrometry (XPS) and differential thermal analysis (DTA) revealed a strong chemical bonding between the nanoparticles and the polymer matrix. The elongation of the SIP nanocomposite under tensile test was about four times greater than that of the composite fabricated by a conventional direct mixing fabrication method. The nanocomposite shows particle-loading-dependent magnetic properties, with an increase of coercive force after the magnetic nanoparticles were embedded into the polymer matrix, arising from the increased interparticle distance and the introduced polymer?particle interactions.
- Published
- 2007
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