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Novel fabrication of magnetic thermoplastic nanofibers via melt extrusion of immiscible blends
Author(s) -
Wang Dong,
Wang Kai,
Xu Weilin
Publication year - 2013
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3051
Subject(s) - materials science , nanofiber , composite number , thermogravimetric analysis , scanning electron microscope , superparamagnetism , nanoparticle , chemical engineering , composite material , extrusion , magnetic nanoparticles , thermoplastic , nanotechnology , magnetization , magnetic field , physics , quantum mechanics , engineering
A novel technique of fabricating magnetic thermoplastic nanofibers by the control of the phase separation of immiscible polymer blends during melt extrusion was presented. The magnetic poly(vinyl alcohol‐ co ‐ethylene) (PVA‐ co ‐PE)/Fe 3 O 4 composite nanofibers were prepared via the melt extrusion of cellulose acetate butyrate matrix and PVA‐ co ‐PE preloaded with different amounts of Fe 3 O 4 nanoparticles. The morphologies of magnetic composite nanofibers were characterized by scanning electron microscopy. The uniform dispersion of Fe 3 O 4 nanoparticles in nanofiber matrixes and crystal structures were confirmed using transmission electron microscopy and wide angle X‐ray diffraction. Thermogravimetric analysis was employed to quantify the exact loading amount of Fe 3 O 4 nanoparticles in the composite nanofibers. The magnetic measurements showed that composite nanofibers displayed superparamagnetic behavior at room temperature. With increasing content of Fe 3 O 4 nanoparticles, the saturation magnetization of the magnetic composite nanofiber significantly improved. The prepared magnetic composite nanofibers might have found potential applications in the sensors and bio‐molecular separation fields. Copyright © 2012 John Wiley & Sons, Ltd.