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Electrospun cerium nitrate/polymer composite fibres: synthesis, characterization and fibre-division model |
Li Meng-Meng (李蒙蒙)a), Long Yun-Ze(龙云泽) a)†, Yin Hong-Xing(尹红星)a), and Zhang Zhi-Ming(张志明)b) |
a College of Physics Science, Qingdao University, Qingdao 266071, China; b College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China |
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Abstract Cerium (III) nitrate/poly(vinylpyrrolidone) (Ce(NO3)3/PVP) composite fibres have been prepared by electrospinning. After calcining the composite fibres in air at 500 ℃, CeO2 nanowires were obtained. The characterizations of the as-spun composite fibres and resultant nanowires have been carried out by a scanning electron microscope (SEM), an infrared spectrometer, an x-ray diffractometer and a fluorescence spectrophotometer. Interestingly, some unusual ribbon-like or twin fibres were observed besides the common fibres with circular or elliptic cross sections. We developed a fibre-division model resulting from Coulomb repulsion and solvent vaporization to interpret the formation of the ribbons or twin fibres, which has been confirmed by the SEM studies. Our results also indicate that the formation of the ribbons or twin fibres is less dependent on operation voltage and work distance.
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Received: 13 June 2010
Revised: 18 December 2010
Accepted manuscript online:
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PACS:
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81.07.-b
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(Nanoscale materials and structures: fabrication and characterization)
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81.05.Lg
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(Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials)
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82.35.Np
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(Nanoparticles in polymers)
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Fund: Project supported by the Program for New Century Excellent Talents at the University of China (Grant No. NCET-07-0472) and the National Natural Science Foundation of China (Grant Nos. 11074138, 10910101081 and 10604038). |
Cite this article:
Li Meng-Meng (李蒙蒙), Long Yun-Ze(龙云泽), Yin Hong-Xing(尹红星), and Zhang Zhi-Ming(张志明) Electrospun cerium nitrate/polymer composite fibres: synthesis, characterization and fibre-division model 2011 Chin. Phys. B 20 048101
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