期刊
JOURNAL OF MATERIALS SCIENCE
卷 48, 期 11, 页码 3991-3998出版社
SPRINGER
DOI: 10.1007/s10853-013-7208-x
关键词
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资金
- National Natural Science Foundation of China [21006010]
- Fundamental Research Funds for the Central Universities
- UK-China Joint Laboratory for Therapeutic Textiles (Donghua University)
- Biomedical Textile Materials 111 Project of the Ministry of Education of People's Republic of China [B07024]
- Research Fund for the Doctoral Program of Higher Education [2009007512001]
Composite non-woven mats of poly(vinyl pyrrolidone) (PVP), chitosan, and Fe3O4 were successfully fabricated using coaxial-electrospinning technique with PVP/chitosan as the shell and PVP/Fe3O4 as the core. Because of the templating and confinement properties of the nanofibers, magnetic chitosan nanoparticles (MCNPs) could be spontaneously formed through molecular self-assembly when the composite fibers were dissolved on treatment with acetum solution. By changing the weight ratio of Fe3O4:chitosan, the size of the MCNPs could be varied. The morphology, chemical composition, and magnetic characteristics of composite particles were characterized by means of scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and vibrating sample magnetometer. Experimental results indicated that the composite particles were super-paramagnetic with sizes in the range of 15-40 nm. This facile and new synthesis route comprises a convenient strategy to generate composite particles and should be broadly applicable to a wide range of systems, serving as a platform for the facile development of novel composite materials.
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