J. Korean Ceram. Soc. > Volume 44(4); 2007 > Article
 Journal of the Korean Ceramic Society 2007;44(4): 194. doi: https://doi.org/10.4191/kcers.2007.44.4.194
 Electrospun Nanofibrous Polyacrylonitrile(PAN)/ Fe2O3 Membrane as Co2Gas Sensor Ye-Na Kim, Eun-Young Park, Deuk-Yong Lee, Myung-Hyun Lee1, Se-Jong Lee2, Bae-Yeon Kim3, Nam-Ihn Cho4 Department of Materials Engineering, Daelim College of Technology1Next Generation Enterprise Group KICET2Department of Advanced Materials Engineering, Kyungsung University3Department of Advanced Materials Engineering, University of Incheon4Department of Electronic Engineering, Sun Moon University ABSTRACT Polyacrylonitrile (PAN)/$Fe_2O_3$ nanocomposite membranes with a thickness of 0.02 mm were electrospun by adding 0 to 5 wt% of $Fe_2O_3$ into PAN. The surface tension, density, kinematic viscosity and dynamic viscosity of the PAN solution were determined to be $33.8{pm}1mN/m$, 0.9794 g/ml, $1548.6mm^2/sec$ and 1516.7 cP, respectively. The average diameters of PAN fibers containing 0, 1 2, 3, and 4 wt% $Fe_2O_3$ particles were 300, 260, 210, 130, and 90 nm, respectively. Fourier-transform infrared spectroscopy results showed that the addition of $Fe_2O_3$ nanoparticles to the PAN mat reduced the absorption peak intensity at $2242cm^{-1}$ ($C{equiv}N$ bond) while it caused a sharp increase in the peak intensity at $2356cm^{-1}$(C=O bond). Thus, it appears that an appropriate amount of $Fe_2O_3$ nanoparticles in the PAN backbone leads to an improvement of the performance of the $CO_2$ gas sensor, most likely due to the change of functional groups in the membrane. Key words: Polyacrylonitrile (PAN), $Fe_2O_3$, Nonofiber, Membrane, $CO_2$ gas sensor
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