Photostabilization and Cure Kinetics of UV-Curable Optical Resins Containing Photostabilizers

Jung-Dae Cho; Sung-Hwa Kim; In-Cheol Chang; Kwon-Seok Kim; Jin-Who Hong

Macromolecular Research, Vol.15, No.6, 560-564, October, 2007

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Photostabilization and Cure Kinetics of UV-Curable Optical Resins Containing Photostabilizers

Jung-Dae Cho, Sung-Hwa Kim¹, In-Cheol Chang¹, Kwon-Seok Kim², and Jin-Who Hong^{2, †}

Institute of Photonics & Surface Treatment, Q-Sys Co. Ltd., Gwangju 500-460, Korea
¹Optical Solution Lab., Central R&D Institute, Samsung Electro-mechanics, Suwon 443-743, Korea
²Department of Polymer Science & Engineering, Chosun University, Gwangju 501-759, Korea

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The photostabilization and cure kinetics of UV-curable, optical resins containing various formulations of photostabilizers were investigated to determine the system with the highest cure conversion and durability. Photo-DSC analysis revealed that increasing the concentration of a UV absorber (UVA) decreased both the cross-link density and the cure rate due to competition for the incident photons between the photoinitiator and the UVA, whereas including a hindered amine light stabilizer (HALS) hardly affected either the cure conversion or the cure rate due to its very low absorption of 365 nm. This result was confirmed by FTIR-ATR spectroscopy and UV-visible spectroscopy analyses. QUV ageing experiments showed that the cure conversion and durability were the highest for the UVA/ HALS formulation at a ratio of 1 : 2, which is due to their synergistic action.

Keywords:photostabilization;cure kinetics;UV-curable optical resin;photo-DSC;FTIR-ATR

[References]

Oldring PKT, Chemistry & Technology of UV & EB Formulation for Coatings Inks & Paints, Vols. 1-4, SITA Technology, London (1991)
Reiser A, Photoreactive Polymers, Wiley, New York (1989)
Roffey CG, Photopolymerization of Surface Coatings, Wiley, New York (1982)
Dellmann L, Roth S, Beuret C, Paratte L, Racine GA, Lorenz H, Despont M, Renaud P, Vettiger P, de Rooij N, Microsyst. Technol., 4, 147 (1998)
Seidemann V, Butefisch S, Buttgenbach S, Sens. Actuators A-Phys., 97-98, 457 (2002)
Kyu T, Meng S, Duran H, Nanjundiah K, Yandek GR, Macromol. Res., 14(2), 155 (2006)
Nam SH, Kang JW, Kim JJ, Macromol. Res., 14(1), 114 (2006)
Hirai Y, Harada S, Isaka S, Kobayashi M, Tanaka Y, Jpn. J. Appl. Phys., 41, 4186 (2002)
Shin DI, Kim SH, Jeong HS, Lee SC, Jin YS, Noh JE, Oh HR, Lee KU, Shin DH, Song SH, Proceedings of SPIE-IS&T Electronic Imaging, 60680Q-1, 6068 (2006)
Decker C, Biry S, Prog. Org. Coat., 29, 81 (1996)
Decker C, Zahouily K, Polym. Degrad. Stabil., 64, 293 (1999)
Zeren S, Macromol. Symp., 187, 343 (2002)
Cho JD, Kim SG, Hong JW, J. Appl. Polym. Sci., 99(4), 1446 (2006)
Hong JH, Kim HK, Macromol. Res., 14(6), 617 (2006)
Clark SC, Hoyle CE, Jonsson S, Morel F, Decker C, Polymer, 40(18), 5063 (1999)
Cho JD, Kim YB, Ju HT, Hong JW, Macromol. Res., 13(4), 362 (2005)
Cho JD, Kim HK, Kim YS, Hong JW, Polym. Test, 22, 633 (2003)
Cho JD, Ju HT, Hong JW, J. Polym. Sci. A: Polym. Chem., 43(3), 658 (2005)
Cho JE, Ju HT, Park YS, Hong JW, Macromol. Mater. Eng., 291, 1155 (2006)

[Referenced By]

[Related Articles]

[1] Oldring PKT, Chemistry & Technology of UV & EB Formulation for Coatings Inks & Paints, Vols. 1-4, SITA Technology, London (1991)

[2] Reiser A, Photoreactive Polymers, Wiley, New York (1989)

[3] Roffey CG, Photopolymerization of Surface Coatings, Wiley, New York (1982)

[4] Dellmann L, Roth S, Beuret C, Paratte L, Racine GA, Lorenz H, Despont M, Renaud P, Vettiger P, de Rooij N, Microsyst. Technol., 4, 147 (1998)

[5] Seidemann V, Butefisch S, Buttgenbach S, Sens. Actuators A-Phys., 97-98, 457 (2002)

[6] Kyu T, Meng S, Duran H, Nanjundiah K, Yandek GR, Macromol. Res., 14(2), 155 (2006)

[7] Nam SH, Kang JW, Kim JJ, Macromol. Res., 14(1), 114 (2006)

[8] Hirai Y, Harada S, Isaka S, Kobayashi M, Tanaka Y, Jpn. J. Appl. Phys., 41, 4186 (2002)

[9] Shin DI, Kim SH, Jeong HS, Lee SC, Jin YS, Noh JE, Oh HR, Lee KU, Shin DH, Song SH, Proceedings of SPIE-IS&T Electronic Imaging, 60680Q-1, 6068 (2006)

[10] Decker C, Biry S, Prog. Org. Coat., 29, 81 (1996)

[11] Decker C, Zahouily K, Polym. Degrad. Stabil., 64, 293 (1999)

[12] Zeren S, Macromol. Symp., 187, 343 (2002)

[13] Cho JD, Kim SG, Hong JW, J. Appl. Polym. Sci., 99(4), 1446 (2006)

[14] Hong JH, Kim HK, Macromol. Res., 14(6), 617 (2006)

[15] Clark SC, Hoyle CE, Jonsson S, Morel F, Decker C, Polymer, 40(18), 5063 (1999)

[16] Cho JD, Kim YB, Ju HT, Hong JW, Macromol. Res., 13(4), 362 (2005)

[17] Cho JD, Kim HK, Kim YS, Hong JW, Polym. Test, 22, 633 (2003)

[18] Cho JD, Ju HT, Hong JW, J. Polym. Sci. A: Polym. Chem., 43(3), 658 (2005)

[19] Cho JE, Ju HT, Park YS, Hong JW, Macromol. Mater. Eng., 291, 1155 (2006)