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The Optimum Stabilization Conditions of TiO2-containing Pitch Fiber  

Eom, Sang Yong (Department of Chemical Engineering, Chungnam National University)
Lee, Chang Ho (Department of Chemical Engineering, Chungnam National University)
Park, Kwan Ho (Department of Chemical Engineering, Chungnam National University)
Ryu, Seung Kon (Department of Chemical Engineering, Chungnam National University)
Publication Information
Korean Chemical Engineering Research / v.45, no.3, 2007 , pp. 269-276 More about this Journal
Abstract
$TiO_2$-containing pitch fibers were prepared and various stabilization variables were investigated by characterizations of the fibers and behaviors of $TiO_2$ particles in the optimum stabilization conditions. When pitch fiber was stabilized by air at the optimum condition, the fiber weight increased as an increase of the stabilization temperature and a decrease of $TiO_2$ concentration. The carbonization yield was 71~82 wt.%, showing a decrease of the yield with the $TiO_2$ increase caused by the catalytic activity of $TiO_2$ to combustion. During the stabilization, newly developed carbonyl and carboxyl groups were introduced on the fiber surface and cross-linking reactions were progressed resulting the thermosetting property, which was verified by the replacement of hydrogen with oxygen. Pore size of the activated carbon fiber was increased by an increase in $TiO_2$ concentration. In the considerations of the aggregation behaviors of the $TiO_2$ particles, the optimum stabilization conditions of 0.5 wt.% $TiO_2$ containing petroleum-based pitch fiber were suggested as $280^{\circ}C$, 3 hr.
Keywords
Pitch Fiber; Stabilization; Carbonization; $TiO_2$-containing CF; Catalytic Activator;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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