Effects of CNT-COOH on the stabilization of polyacrylonitrile copolymers
발표자
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초록
내용
Polyacrylonitrile (PAN) homopolymer is rarely used as a precursor of carbon fibers due to high stabilization temperature and low processability. To overcome above problems, PAN copolymer using various comonomers were generally synthesized. The high cyclization initiation temperature causes thermal damage to PAN surface during the stabilization process, which raise the degradation of mechanical properties of carbon fibers. As a method for lowering the stabilization temperature, acidic comonomers with a carboxyl group such as Itaconic acid (IA) or Acrylic acid (AA) is generally used. Carbon-based filler, such as Carbon nanotube (CNT), have high thermal conductivity and excellent mechanical properties, so addition as reinforcements to PAN precursors can promote cyclization reaction. In this study, we designed a series of Poly(acrylonitrile-co-itaconic acid) with thermally conductive CNT-COOH. Finally, Characteristics of PAN/CNT-COOH composites were analyzed by various analytical tools.