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http://dx.doi.org/10.14478/ace.2018.1013

Effect of Pore Structure of Activated Carbon Fiber on Mechanical Properties  

Choi, Yun Jeong (Carbon Industry Frontier Research Center, Korea Research Institute of Chemical Technology (KRICT))
Lee, Young-Seak (Department of applied chemical engineering, Chungnam National University)
Im, Ji Sun (Carbon Industry Frontier Research Center, Korea Research Institute of Chemical Technology (KRICT))
Publication Information
Applied Chemistry for Engineering / v.29, no.3, 2018 , pp. 318-324 More about this Journal
Abstract
In this study, PAN (polyacrylonitrile) based activated carbon fibers were prepared by water vapor activation method which is a physical activation method. Activation was performed with temperature and time as parameters. When the activation temperature reached 700, 750 and $800^{\circ}C$, the activation was carried out under the condition of a water vapor flow rate of 200 ml/min. In order to analyze the pore structure of activated carbon fibers, the specific surface area ($S_{BET}$) was measured by the adsorption/desorption isotherm of nitrogen gas and AFM analysis was performed for the surface analysis. Tensile tests were also conducted to investigate the effect of the pore structure on mechanical properties of fibers. As a result, the $S_{BET}$ of fibers after the activation showed a value of $448{\sim}902m^2/g$, the tensile strength decreased 58.16~84.92% and the tensile modulus decreased to 69.81~83.89%.
Keywords
Activated carbon fiber; steam activation; BET; AFM; mechanical properties;
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