Lee, Sungho Kim, Yang-Jin Kim, Do-Hwan Ku, Bon-Cheol Joh, Han-Ik 2024-01-20T14:34:23Z 2024-01-20T14:34:23Z 2021-09-04 2012-06 0022-3697 https://pubs.kist.re.kr/handle/201004/129227 Graphene oxide (GO) was prepared from graphite using a modified Hummers method. The GO dispersed in dimethyl sulfoxide (DMSO) was incorporated into polyacrylonitrile (PAN) dissolved in DMSO to prepare composite films using a conventional solution-casting method. DSC results showed a significant decrease in the cyclization temperature of polyacrylonitrile (PAN) in the presence of GO because the functional groups of GO initiated cyclization at lower temperature by an ionic mechanism. Heat treatment in air at 250 degrees C for 3 h led to stabilization of PAN and a simultaneous partial reduction of GO. A significant decrease in the electrical resistivity of the GO/PAN composite films was observed because the partially reduced GO acted as a conducting filler. (C) 2012 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD CARBON POLYACRYLONITRILE STABILIZATION Synthesis and properties of thermally reduced graphene oxide/polyacrylonitrile composites Article 10.1016/j.jpcs.2012.01.015 1 JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, v.73, no.6, pp.741 - 743 JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 73 6 741 743 scie scopus 000302446000007 2-s2.0-84862791955 Chemistry, Multidisciplinary Physics, Condensed Matter Chemistry Physics Article CARBON POLYACRYLONITRILE STABILIZATION Polymers Differential scanning calorimetry (DSC) Infrared spectroscopy Electrical properties