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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 Technology
1Next Generation Enterprise Group KICET
2Department of Advanced Materials Engineering, Kyungsung University
3Department of Advanced Materials Engineering, University of Incheon
4Department of Electronic Engineering, Sun Moon University
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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