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http://dx.doi.org/10.7234/composres.2022.35.2.115

Polyacrylonitrile based Copolymer Synthesis and Precursor Fiber Spinning for Manufacturing High-performance Carbon Fiber  

Ju, Hyejin (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology)
Han, Minjung (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology)
Song, Kyunghyun (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology)
Jeon, Changbeom (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology)
Jeong, Hwakyung (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology)
Kim, Min Jeong (LOTTE Chemical Advanced Materials, LOTTE Chemical)
Chae, Han Gi (School of Materials Science and Engineering, Ulsan National Institute of Science and Technology)
Publication Information
Composites Research / v.35, no.2, 2022 , pp. 115-119 More about this Journal
Abstract
The performance of carbon fiber is important for the production of these high-quality polymer composite materials such as CFRP (Carbon Fiber Reinforced Plastic). For this purpose, it is essential to use an optimized spinning process for improving the mechanical, physical, and structural properties of the precursor fiber, which greatly affects the properties of the carbon fiber, and the use of a suitable precursor polymer. In this study, the content of MAA (Methacrylic Acid), MAA injection time, and concentration of AIBN (2,2'-Azobis(2-methylpropionitrile)) were set as parameters for the polymer synthesis process, and Poly(AN-co-MAA) (poly(acrylonitrile-co-methacrylic acid)) was polymerized by solution polymerization. Poly(AN-co-MAA) with a molecular weight of 305,138 g/mol and an MAA ratio of 4.2% was dissolved in DMF (N,N-dimethylformamide) at a concentration of 16.0 wt%, and then a precursor fiber was prepared through dry-jet-wet spinning. The precursor fiber had a tensile strength of ~1.06 GPa and a tensile modulus of ~22.01 GPa, and no voids and structural defects were observed on the fiber.
Keywords
Polyacrylonitrile; Carbon fiber precursor; Copolymerization; Spinning;
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