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http://dx.doi.org/10.6108/KSPE.2019.23.5.036

Study of the Crystal Structure of a Lyocell Precursor for Carbon Fibers  

Park, Gil-Young (New Business Division, Dissol Co)
Kim, Woo-Sung (New Business Division, Dissol Co)
Lee, Su-Oh (Department of Organic Materials & Fiber Engineering, Jeonbuk National University)
Hwang, Tae-Kyung (The 4th R&D Institute, Agency for Defense Development)
Kim, Yun-Chul (The 4th R&D Institute, Agency for Defense Development)
Seo, Sang-Kyu (The 4th R&D Institute, Agency for Defense Development)
Chung, Yong-Sik (Department of Organic Materials & Fiber Engineering, Jeonbuk National University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.23, no.5, 2019 , pp. 36-42 More about this Journal
Abstract
In this study, the pre-treatment of lyocell fabrics was performed using phosphoric acid (PA) as a phosphorus flame retardant and melamine resin (MR) as a cross-linking agent to fabricate carbon fabrics using lyocell fibers. The physical and chemical changes were investigated by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), X-ray diffractometry (XRD) and weight analysis. We confirmed that the weight yield of the carbon fabrics compared to the untreated fabrics increased by 14.7%, and width and length yield of the fabrics increased by 15% and 15.5%, respectively. This may be due to the effect of promoting the dehydration reaction of cellulose, forming char on the fiber surface, which induces a crosslinking reaction in the cellulose molecule and stabilizes the structure upon pyrolysis.
Keywords
Cellulose based-Carbon fiber; Lyocell; Pyrolysis; Graphitization; Crystallinity; Yeild;
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