NSTI Nanotech 2009

Impedance of Nanoparticles Embedded Electrospun Nanofiber

M. Chung, J.W. Lan, H.Y. Lin, T.W. Suen, S.H. Cheng
Southern Taiwan University, TW

Keywords: electrospinning, nanofiber, nanoparticle, impedance


Electrospinning produces nanofibers with diameters ranging from 100-500 nm under 10-20 KV at 10-20 cm distances, and if these nanofibers were composed of polymers like PVA or PVP, they are usually nonconductive with resistances too larger to measure on ordinary meter. One way to change the conductivity of nanofibers is to add nanoparticles. We produce Fe3O4 nanoparticles with polyol method, and mix these nanoparticles with diameters ranging from 30-100 nm into electrospinning process on a double knife edge receptor set up. We found the current between the two knife edge of 0.005 g of nanofibers is around 20 nA at 50 V bias, and based on estimations of nanofiber diameter and number, the resistance of each individual nanoparticles containing nanofibers can be estimated.
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