Fabrication of nickel-cobalt intermetallic nanotapes by electrospinning
This dissertation thesis is on the fabrication of Nickel-Cobalt nanotapes prepared by electrospinning technique. Electrospinning is a nanofabrication technique in which a polymeric solution is allowed to pass through an electric field of intensity ~105 V/m. In this work, the precursor polymeric sol...
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| Format: | Undergraduates Project Papers |
| Diterbitkan: |
2016
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| Capaian Atas Talian: | http://iportal.ump.edu.my/lib/item?id=chamo:102356&theme=UMP2 http://iportal.ump.edu.my/lib/item?id=chamo:102356&theme=UMP2 http://umpir.ump.edu.my/19272/1/Fabrication%20of%20nickel-cobalt%20intermetallic%20nanotapes%20by%20electrospinning-%20Table%20of%20contents.pdf http://umpir.ump.edu.my/19272/7/Fabrication%20of%20nickel-cobalt%20intermetallic%20nanotapes%20by%20electrospinning%20-Abstract.pdf http://umpir.ump.edu.my/19272/13/Fabrication%20of%20nickel-cobalt%20intermetallic%20nanotapes%20by%20electrospinning%20-Chapter%201.pdf http://umpir.ump.edu.my/19272/14/Fabrication%20of%20nickel-cobalt%20intermetallic%20nanotapes%20by%20electrospinning%20-References.pdf |
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| Ringkasan: | This dissertation thesis is on the fabrication of Nickel-Cobalt nanotapes prepared by electrospinning technique. Electrospinning is a nanofabrication technique in which a
polymeric solution is allowed to pass through an electric field of intensity ~105 V/m. In this work, the precursor polymeric solution was prepared by dissolving equimolar
nickel acetate (18 mmol) and cobalt acetate in 50 wt.% polyvinylpyrrolidone (Mol. Wt. 40,000) in ethanol. The viscosity of the above solution was measured using a
viscometer; the viscosity of the solution was ~653 cP. This solution was electrospun using a commercial electrospinning unit at 24 kV with a solution injection rate 0.5 ml/h. The as-spun fibers were annealed in an argon atmosphere at ~450 – 550oC for 1 h, based on thermogravimetric analysis. The annealed materials were examined by X-ray diffraction (XRD) technique and field emission scanning electron microscopy (FESEM). The XRD measurements showed that the annealed samples were only
partially crystallized and has a belt-like morphology. |
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