표면가수분해된 셀룰로오스 아세테이트 섬유의 제조 및 LCD 러빙포로의 응용

김현선; 김영호; Hyun-Sun Kim; Young Ho Kim

Polymer(Korea), Vol.37, No.1, 52-60, January, 2013

Export Citation

표면가수분해된 셀룰로오스 아세테이트 섬유의 제조 및 LCD 러빙포로의 응용

Preparation of Surface-Hydrolyzed Cellulose Acetate Fibers and Their Applications to LCD Rubbing Cloth

김현선, 김영호 ^†

숭실대학교 유기신소재·파이버공학과

Hyun-Sun Kim, and Young Ho Kim^†

Department of Organic Materials and Fiber Engineering, Soongsil University, Seoul 156-743, Korea

E-mail:

초록

셀룰로오스 아세테이트(CA) 섬유를 Na2CO3 용액으로 가수분해하여 탈아세테이트 반응시키면 레이온 섬유로 전환된다. 이때 처리조건을 조절함으로써 표면만 가수분해시켜, 표면은 레이온 성분이고 내부는 CA 성분으로 된 sheath-core형 표면가수분해 CA(SH-CA) 섬유를 얻었다. 시료들의 가수분해는 FTIR 스펙트럼 및 WAXD 패턴으로 분석하였으며, CA 성분을 아세톤으로 용출시킨 시료들의 SEM 사진으로부터 sheath-core 구조를 확인하였다. 이 sheath-core 형태의 SH-CA 섬유로 된 벨벳 직물을 사용하여, 액정디스플레이(LCD)용 폴리이미드 배향막을 러빙시키고 편광 FTIR 스펙트럼으로 분석하여 이 SH-CA 섬유 벨벳직물이 LCD용 러빙포로 사용될 수 있음을 확인하였다.

Partially hydrolyzed cellulose acetate (CA) fibers were prepared by treating CA fibers in aqueous Na2CO3 solutions of various concentrations. The deacetylation of CA fibers was confirmed through FTIR spectra and WAXD patterns. The hydrolysis was confined to the surface part of the CA fiber by controlling the treatment conditions. The resultant fibers had a sheath-core structure with a sheath component of regenerated cellulose and a core of non-hydrolyzed cellulose acetate. The SEM images of the surface-hydrolyzed CA fibers, the core of which was dissolved out using acetone as the solvent, showed that the sheath thickness increased with increasing alkaline concentration, indicating an increase in the hydrolyzed fiber, i.e., regenerated cellulose. Polarized FTIR analysis of the polyimide film rubbed with velvet fabrics of surface-hydrolyzed CA fibers showed that polyimide molecules were preferentially oriented to the rubbing direction.

Keywords:cellulose acetate;fiber;surface hydrolysis;sheath-core structure;rubbing cloth.

[References]

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Berreman DW, Phys. Rev. Lett., 28, 1683 (1972)
Yamahara M, Nakamura M, Koide N, Sasaki T, Mol.Cryst. Liq. Cryst., 466, 39 (2007)
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Ishikawa A, Okano T, Sugiyama J, Polymer, 38(2), 463 (1997)
Lewin M, Sello SB, Editors, Handbook of Fiber Science and Technology, Marcel Dekker, NY, USA, Vol 1, Part A, 95 (1983)
Kim IS, Kim JP, Kwak SY, Ko YS, Kwon YK, Polymer, 47(4), 1333 (2006)
Kolpak FJ, Weih M, Blackwell J, Polymer., 19, 123 (1978)
Kim YB, Ban BS, Liquid Crystal., 26, 1579 (1999)
Lee TJ, Hahm SG, Lee SW, Chae B, Mater. Sci. Eng.B., 132, 64 (2006)
Seeboth A, Display., 20, 131 (1999)
Castello JA, Mol. Cryst. Liq. Cryst., 94, 33 (1983)
Berreman DW, Mol. Cryst. Liq. Cryst., 23, 215 (1973)
Mosley A, Nicholas BM, Gass PA, Display., 8, 17 (1987)
Lee ES, Vetter P, Miyashita T, Uchida T, Jpn. J. Appl.Phys., 32, L1339 (1993)
Kim IH, Kim WS, Ha K, Polym.(Korea), 26(2), 209 (2002)
Ishihara S, Wakemoto H, Nakazima K, Matsuo Y, Liquid Crystal., 4, 669 (1989)

[Related Articles]

[1] Dong W, Yi MH, Paek SH, Polym.(Korea), 27(5), 484 (2003)

[2] Berreman DW, Phys. Rev. Lett., 28, 1683 (1972)

[3] Yamahara M, Nakamura M, Koide N, Sasaki T, Mol.Cryst. Liq. Cryst., 466, 39 (2007)

[4] Ahn HJ, Lee JJ, Ahn JS, Park KC, Noh JG, Yoo DY, Paek SH, Polym.(Korea), 35(5), 385 (2011)

[5] Greary JM, Goodby JW, Kmetz AR, Patel JS, J. Appl.Phys., 62, 4100 (1987)

[6] Coleman DC, “Rayon”, in Courtaulds, Oxford Univ. Press, London, Vol II, 61 (1969)

[7] Buchanan CM, Edgar KJ, Wilson AK, Macromolecules., 24, 3060 (1991)

[8] Krassing HA, Cellulose: Structure, Accessibility and Reactivity, Gordon and Breach Science Publichers, Swizerland, 41 (1993)

[9] Ishikawa A, Okano T, Sugiyama J, Polymer, 38(2), 463 (1997)

[10] Lewin M, Sello SB, Editors, Handbook of Fiber Science and Technology, Marcel Dekker, NY, USA, Vol 1, Part A, 95 (1983)

[11] Kim IS, Kim JP, Kwak SY, Ko YS, Kwon YK, Polymer, 47(4), 1333 (2006)

[12] Kolpak FJ, Weih M, Blackwell J, Polymer., 19, 123 (1978)

[13] Kim YB, Ban BS, Liquid Crystal., 26, 1579 (1999)

[14] Lee TJ, Hahm SG, Lee SW, Chae B, Mater. Sci. Eng.B., 132, 64 (2006)

[15] Seeboth A, Display., 20, 131 (1999)

[16] Castello JA, Mol. Cryst. Liq. Cryst., 94, 33 (1983)

[17] Berreman DW, Mol. Cryst. Liq. Cryst., 23, 215 (1973)

[18] Mosley A, Nicholas BM, Gass PA, Display., 8, 17 (1987)

[19] Lee ES, Vetter P, Miyashita T, Uchida T, Jpn. J. Appl.Phys., 32, L1339 (1993)

[20] Kim IH, Kim WS, Ha K, Polym.(Korea), 26(2), 209 (2002)

[21] Ishihara S, Wakemoto H, Nakazima K, Matsuo Y, Liquid Crystal., 4, 669 (1989)