Composite Layer Formation on Plastic Substrates for Flexible Display by Using Functionalized Nanoclay

Min Jeong Kim; Hyun Gi Kim; Sung Soo Kim

Macromolecular Research, Vol.20, No.7, 739-745, July, 2012

DOI10.1007/s13233-012-0110-6 Export Citation

Composite Layer Formation on Plastic Substrates for Flexible Display by Using Functionalized Nanoclay

Min Jeong Kim¹, Hyun Gi Kim¹, and Sung Soo Kim^{1, 2, †}

¹Department of Chemical Engineering, Kyung Hee University, Gyeonggi, 446-701, Korea
²Regional Innovation Center for Components and Materials for Information Display, Kyung Hee University, Gyeonggi, 446-701, Korea

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Polymer/nanoclay composite layers were formed by a UV-curing process on plastic substrates for flexible display to enhance their mechanical and barrier properties. Sodium montmorillonite (Na+-MMT) was modified for intercalation by cationic surfactants having various alkyl chain lengths. Increase of alkyl chain length achieved more intercalation of the nanoclays, and the maximum d-spacing was 4.2 nm when modified by cetyltrimethyl ammonium bromide (CTAB). The modified nanoclay was then functionalized by isophorone diisocyanate-2-hydroxyethyl acrylate (IPDI-HEA) having a reactive acrylate group, which enhanced its compatibility within the polymer matrix. The composite layer formation using functionalized nanoclay still improved the mechanical and barrier properties. The pencil hardness was improved to 3H and impact energy increased to 150 mJ, while maintaining the original optical properties of the polyethersulfone (PES) substrate. Oxygen transmittance rate (OTR) was remarkably reduced from 250 to 18.5 cc/m2 day and water vapor transmission rate (WVTR) was gradually decreased from 60 to 37.7g/ m2 day with the increase of nanoclay content, respectively. Composite layers with functionalized nanoclay improved the properties of the PES substrate to be used in flexible displays.

Keywords:composite layer;nanoclay;cationic surfactant;barrier property;UV-curing.

[References]

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Li TL, Hsu SLC, Eur. Polym. J., 43, 3368 (2007)
Cho SW, Jeong JA, Bae JH, Moon JM, Choi KH, Jeong SW, Park NJ, Kim JJ, Lee SH, Kang JW, Yi MS, Kim HK, Thin Solid Films, 516(21), 7881 (2008)
Rahy A, Bajaj P, Musselman IH, Hong SH, Sun YP, Yang DJ, Appl. Surf. Sci., 255(15), 7084 (2009)
Choi MC, Kim Y, Ha CS, Prog. Polym. Sci., 33, 581 (2008)
Lim SC, Kim SH, Lee JH, Yu YH, Park Y, Kim D, Zyung T, Mater. Sci. Eng. B., 121, 211 (2005)
Hah H, Sung SJ, Han M, Lee SS, Park JK, Displays., 29, 478 (2008)
Low HY, Chua SJ, Mater. Lett., 53, 227 (2002)
Burrows PE, Graff GL, Gross ME, Martin PM, Shi MK, Hall M, Mast E, Bonham C, Bennett W, Sullivan MB, Displays., 22, 65 (2001)
Yan M, Kim TW, Erlat AG, Pellow M, Foust DF, Liu J, Schaepkens M, Heller CM, McConnelee PA, Feist TP, Duggal AR, Proc. IEEE., 93, 1468 (2005)
Wuu DS, Lo WC, Chiang CC, Lin HB, Chang LS, Horng RH, Huang CL, Gao YJ, Surf. Coat. Technol., 197, 253 (2005)
Pham TTT, Lee JH, Kim YS, Yeom GY, Surf.Coat. Technol., 202, 5617 (2008)
Lee JH, Jeong CH, Kim HB, Lim JT, Kyung SJ, Yeom GY, Thin Solid Films, 515(3), 917 (2006)
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Triantafyllidis KS, LeBaron PC, Park I, Pinnavaia TJ, Chem. Mater., 18, 4393 (2006)
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Valdes SS, Quintanilla MLL, Vargas ER, Rodriguez FJM, Macromol. Mater. Eng., 291, 128 (2006)
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Asif A, Huang C, Shi W, Colloid Polym. Sci., 283, 200 (2004)
Lv S, Zhou W, Li S, Shi W, Eur. Polym. J., 44, 1613 (2008)
He HP, Duchet J, Galy J, Gerard JF, J. Colloid Interface Sci., 288(1), 171 (2005)
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[Referenced By]

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[1] Logothetidis S, Mater. Sci. Eng. B., 152, 96 (2008)

[2] Li TL, Hsu SLC, Eur. Polym. J., 43, 3368 (2007)

[3] Cho SW, Jeong JA, Bae JH, Moon JM, Choi KH, Jeong SW, Park NJ, Kim JJ, Lee SH, Kang JW, Yi MS, Kim HK, Thin Solid Films, 516(21), 7881 (2008)

[4] Rahy A, Bajaj P, Musselman IH, Hong SH, Sun YP, Yang DJ, Appl. Surf. Sci., 255(15), 7084 (2009)

[5] Choi MC, Kim Y, Ha CS, Prog. Polym. Sci., 33, 581 (2008)

[6] Lim SC, Kim SH, Lee JH, Yu YH, Park Y, Kim D, Zyung T, Mater. Sci. Eng. B., 121, 211 (2005)

[7] Hah H, Sung SJ, Han M, Lee SS, Park JK, Displays., 29, 478 (2008)

[8] Low HY, Chua SJ, Mater. Lett., 53, 227 (2002)

[9] Burrows PE, Graff GL, Gross ME, Martin PM, Shi MK, Hall M, Mast E, Bonham C, Bennett W, Sullivan MB, Displays., 22, 65 (2001)

[10] Yan M, Kim TW, Erlat AG, Pellow M, Foust DF, Liu J, Schaepkens M, Heller CM, McConnelee PA, Feist TP, Duggal AR, Proc. IEEE., 93, 1468 (2005)

[11] Wuu DS, Lo WC, Chiang CC, Lin HB, Chang LS, Horng RH, Huang CL, Gao YJ, Surf. Coat. Technol., 197, 253 (2005)

[12] Pham TTT, Lee JH, Kim YS, Yeom GY, Surf.Coat. Technol., 202, 5617 (2008)

[13] Lee JH, Jeong CH, Kim HB, Lim JT, Kyung SJ, Yeom GY, Thin Solid Films, 515(3), 917 (2006)

[14] Leterrier Y, Prog. Mater. Sci., 48, 1 (2003)

[15] Triantafyllidis KS, LeBaron PC, Park I, Pinnavaia TJ, Chem. Mater., 18, 4393 (2006)

[16] Pavlidou S, Papaspyrides CD, Prog. Polym. Sci., 33, 1119 (2008)

[17] Yano K, Usuki A, Okada A, Kurauchi T, Kamigaito O, J. Polym. Sci. Part A: Polym. Chem., 31, 2493 (1993)

[18] Tan H, Han J, Ma G, Xiao M, Nie J, Polym. Degrad.Stab., 93, 369 (2008)

[19] Pinnavaia TJ, Science., 220, 365 (1983)

[20] Wang Z, Pinnavaia TJ, Chem. Mater., 10, 3769 (1998)

[21] Valdes SS, Quintanilla MLL, Vargas ER, Rodriguez FJM, Macromol. Mater. Eng., 291, 128 (2006)

[22] Osman MA, Mittal V, Morbidelli M, Suter UW, Macromolecules, 37(19), 7250 (2004)

[23] Asif A, Huang C, Shi W, Colloid Polym. Sci., 283, 200 (2004)

[24] Lv S, Zhou W, Li S, Shi W, Eur. Polym. J., 44, 1613 (2008)

[25] He HP, Duchet J, Galy J, Gerard JF, J. Colloid Interface Sci., 288(1), 171 (2005)

[26] Tyan HL, Liu YC, Wei KH, Chem. Mater., 11, 1942 (1999)

[27] Grunlan JC, Grigorian A, Hamilton CB, Mehrabi AR, J. Appl. Polym. Sci., 93(3), 1102 (2004)