Lee, Hwayoung Lee, Lo-Woon Lee, Seung-Wook Joh, Han-Ik Jo, Seong-Mu Lee, Sungho 2024-01-20T10:01:08Z 2024-01-20T10:01:08Z 2021-09-05 2014-05 1618-7229 https://pubs.kist.re.kr/handle/201004/126847 Carbon fibers (CFs) were prepared using low-cost, textile-grade polyacrylonitrile fibers, which were 200% to 400% drawn in a hot water bath at 90 degrees C or/and in a tubular furnace at 180 degrees C. X-ray diffractograms confirmed that the drawing process led to higher crystallinity and molecular orientation. These fibers were stabilized in a convection oven at 25-255 degrees C for 390 min. After stabilization, carbonization was performed to obtain carbon fibers. The tensile strength of CFs without drawing was similar to 0.8 GPa; however, CFs with 200% and 200% drawing in a hot water bath at 90 degrees C and in a tubular furnace at 180 degrees C, respectively, showed a tensile strength of similar to 1.7 GPa. These results suggest that the drawing process of precursor fibers affected the tensile properties of the resulting CFs significantly. English WALTER DE GRUYTER GMBH POLYACRYLONITRILE FIBERS STABILIZATION PRECURSOR CARBONIZATION Effects of drawing process on the structure and tensile properties of textile-grade PAN fiber and its carbon fiber Article 10.1515/epoly-2013-0080 1 E-POLYMERS, v.14, no.3 E-POLYMERS 14 3 scie scopus 000342083600008 2-s2.0-84926471528 Polymer Science Polymer Science Article POLYACRYLONITRILE FIBERS STABILIZATION PRECURSOR CARBONIZATION carbon fiber drawing process tensile properties textile polyacrylonitrile XRD