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자료유형
동향자료
저자정보
Cheng, Run (State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology) Zhou, You (Department of Chemistry and Chemical Engineering, Anyang Normal University) Wang, Jing (Department of Chemistry and Chemical Engineering, Anyang Normal University) Cheng, Yumin (Department of Chemistry and Chemical Engineering, Anyang Normal University) Ryu, Seungkon (Department of Chemical Engineering, Chungnam National University) Jin, Riguang (State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology)
저널정보
한국탄소학회 Carbon letters Carbon letters 제14권 제1호
발행연도
2013.1
수록면
34 - 39 (6page)

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Acrylonitrile (AN)-acrylamide (AM) copolymers were prepared by nitric acidic hydrolysis of homopolyacrylonitrile. The acrylamino group increased as a function of hydrolysis time, while crystallinity decreased. Differential scanning calorimetry and a thermal gravimetric analysis indicated that the acylamino introduced by acidic hydrolysis effectively enhanced the cyclization reaction at low temperature due to the change of the cyclization reaction mechanism. Char-yield of AN-AM copolymers also gradually increased with increasing hydrolysis time. The maximum char-yield was 49.48% when hydrolized at $23^{\circ}C$ in 65% nitric acid solution for 18 h, which was 30% higher than that of non-acidic hydrolysis of homopolyacrylonitrile. Simulation of the practical process also showed an increase of char yields, where the char yields were 55.43% and 62.60% for homopolyacrylonitrile and copolyacrylonitrile, respectively, with a hydrolysis time of 13 h.

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