Accelerating the stabilization of polyacrylonitrile fibers by UV irradiation

Su-Young Son; A Young Jo; Gun Young Jung; Yong-Sik Chung; Sungho Lee

Journal of Industrial and Engineering Chemistry, Vol.73, 47-51, May, 2019

DOI10.1016/j.jiec.2019.01.012 Export Citation

Accelerating the stabilization of polyacrylonitrile fibers by UV irradiation

Su-Young Son^{1, 2}, A Young Jo^{1, 3}, Gun Young Jung², Yong-Sik Chung³, and Sungho Lee^{1, 4}

¹Carbon Composite Materials Research Center, Korea Institute of Science and Technology, 92 Chudong-ro, Bongdong-eup, Wanju-gun, Jeonbuk 55324, Republic of Korea
²School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
³Department of Organic Materials and Fiber Engineering, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeonbuk 54896, Republic of Korea
⁴Department of Nano Material Engineering, Korea University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea

Commercial polyacrylonitrile (PAN) fibers, widely used as carbon fiber precursors, were treated with ultraviolet (UV) light without any photo-initiators and its effects on the structural changes of PAN were investigated. Easily accessible UV irradiation produced free radicals by breaking the C- H bonding in PAN, leading to reducing cyclization temperature and activation energy. Dynamic mechanical analysis indicated a decrease in storage modulus of PAN fibers with increasing UV irradiation time below glass transition temperature. It is suggested that UV irradiation and the subsequent thermal treatment could offer an efficient stabilization by reducing the cyclization temperature and process time.

Keywords:Polyacrylonitrile;Ultraviolet irradiation;Stabilization;Thermal properties;Dynamic mechanical analysis

[References]

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Arbab S, Zeinolebadi A, Polym. Degrad. Stabil., 98, 2537 (2013)
Arbab S, Zeinolebadi A, Polym. Degrad. Stabil., 139, 107 (2017)
Yoo SH, Park S, Park Y, Lee D, Joh HI, Shin I, Lee S, Carbon, 118, 106 (2017)
Kamweru PK, Ndiritu FG, Kinyanjui TK, Muthui ZW, Ngumbu RG, Odhiambo PM, J. Macromol. Sci. B, 51, 817 (2012)
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[1] Morgan P, Carbon Fibers and Their Composites, CRC Press, 2005.

[2] Gupta A, Harrison IR, Carbon, 34, 1427 (1996)

[3] Jung KH, Nam S, Kang SS, Ku BC, Bang YH, Hwang JY, Carbon Lett., 21, 103 (2017)

[4] Choi D, Kil HS, Lee S, Carbon, 142, 610 (2018)

[5] Sedghi A, Farsani RE, Shokuhfar A, J. Mater. Process. Technol., 198, 60 (2008)

[6] Baker DA, Rials TG, J. Appl. Polym. Sci., 130(2), 713 (2013)

[7] Rahaman MSA, Ismail AF, Mustafa A, Polym. Degrad. Stabil., 92, 1421 (2007)

[8] Park S, Yoo SH, Kang HR, Jo SM, Joh HI, Lee S, Sci. Rep., 6, 27330 (2016)

[9] Pappas SP, Radiation Curing: Science and Technology, Springer Science & Business Media, New York, 2013.

[10] Morales MS, Ogale AA, J. Appl. Polym. Sci., 130(4), 2494 (2013)

[11] Morales MS, Ogale AA, J. Appl. Polym. Sci., 131, 40823 (2014)

[12] Park OK, Lee S, Joh HI, Kim JK, Kang PH, Lee JH, Ku BC, Polymer, 53(11), 2168 (2012)

[13] Arbab S, Zeinolebadi A, Polym. Degrad. Stabil., 98, 2537 (2013)

[14] Arbab S, Zeinolebadi A, Polym. Degrad. Stabil., 139, 107 (2017)

[15] Yoo SH, Park S, Park Y, Lee D, Joh HI, Shin I, Lee S, Carbon, 118, 106 (2017)

[16] Kamweru PK, Ndiritu FG, Kinyanjui TK, Muthui ZW, Ngumbu RG, Odhiambo PM, J. Macromol. Sci. B, 51, 817 (2012)

[17] Lee S, Kim J, Ku BC, Kim J, Joh HI, Adv. Chem. Eng. Sci., 2, 275 (2012)

[18] Yu MJ, Wang CG, Bai YJ, Wang YX, Xu Y, Polym. Bull., 57(5), 757 (2006)

[19] Zussman E, Chen X, Ding W, Calabri L, Dikin DA, Quintana JP, Ruoff RS, Carbon, 43, 2175 (2005)

[20] Zhou ZP, Lai CL, Zhang LF, Qian Y, Hou HQ, Reneker DH, Fong H, Polymer, 50(13), 2999 (2009)