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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Conducting Nano-Wires Prepared from Nylon Electrospun Fibres Modified with Polyaniline
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 2069-2074)
Author(s): Cui-ping Yi, Department. of Food and Biological. Engineering, Changsha University Of Science and Technology, Changsha, China, 410114
Keith Warriner, Department. of Food Science,University. of Guelph, Guelph, Canada, N1G 2W1
Abstract: Electrospun fibres have a high surface area and mechanical strength compared to conventional extruded or cast films. This has led to application in ultra-thin fabric materials and filtration matrices amongst other applications. The following describes the fabrication of conducting nanofibers prepared from nylon and polyaniline that can find potential utility in sensor and novel filtration materials. The base fibres were prepared using a polymer melt consisting of 22% w/w nylon-6 dissolved in 88% formic acid. The polymer melt was pasted through a spinnert that was polarized at 18 KV with the resultant fibre being captured on an aluminium collector plate. Polyaniline was deposited on the surface of electrospun fibres by diffusion from 0.3 mol/L to 0.6mol/L aniline solution containing 0.35 mol/L HCl and polymeriztion in corresponding molar ratio ammonium persulphate with 0.35 mol/L HCl. Confirmation that the polyaniline had been deposited on the fibre surface was performed using Fourier transform infrared spectroscopy and Scanning Electron Microscopy. The conducting fibres had a diameter of approximately 151.80±57.69 nm with an even coverage of the polyaniline layer. The modified fibres were further characterized using electrochemical impedance spectroscopy that confirm the fibres were conductive although did have a relatively high resistance (94 kohm). The conducting polymer nanofibers have potential to use as the basis for a reagentless immunoassay for biohazard detection.
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