Abstract
Preparation of UV-curable intercalated/exfoliated epoxide/acrylateclays nanocomposite resins with the addition of specific monomers and solvent via the consideration of solubility parameter and chemical reactivity was carried out in this work. Due to the good compatibility with surfactant in acrylateclays and the cationic oligomer in resin matrix, the two additive monomers dispersed uniformly in resin matrix with the swollen acrylateclays before UV curing. As revealed by conversion ratio and DTG analyses, chemical bonds between the two additive monomers, the cationic oligomers and surfactant in acrylateclays were formed during UV irradiation. This, in turn, generated a hybrid acrylate-based/epoxy network and effectively enlarged the lamellae spacing of inorganic clays in nanocomposite resins prepared in this work. The XRD and TEM characterizations revealed that the intercalated clay domains containing exfoliated lamellae about 1 nm in thickness uniformly disperse in polymeric matrix. The nanocomposite resin containing 5 wt.% inorganic filler possessed the physical properties as follows: T d-5% = 213 °C, CTE = 80.5 ppm/°C, moisture absorption = 6.12%, average optical transmittance = 83.17%, and adhesion strength on glass substrate = 43.8 kgf/cm2. The analyses above indicated that the formation of polymeric interpenetrating networks and nanometer-scale exfoliation of clay lamellae not only improve the thermal properties and resistance to moisture permeation, but also retain highly optical transmittance and satisfactory adhesion strength of nanocomposite resins prepared in this work. A better device lifetime property was hence achieved when the nanocomposite resins were applied to the packaging of OLEDs.
Similar content being viewed by others
References
Nagata H, Shiroishi M, Miyama Y, Mitsugi N, Miyamoto N (1995) Opt Fib Tech 1:283
Baikerikar KK, Scranton AB (2001) Polym 42:431
Chou YC, Wang YY, Hsieh TE, J Appl Polym Sci (accepted)
Wang YY, Hsieh TE, IEEE Trans Adv Package (accepted)
Decker C, Zahouily K, Keller L, Benfarhi S, Bendaikha T (2002) J Mater Sci 37:4831
Keller L, Decker C, Zahouily K, Benfarhi S, Le Meins JM, Miehe-Brendle J (2004) Polym 45:7437
Shemper BS, Morizur JF, Alirol M, Domenech A, Hulin V, Mathias LJ (2004) J Appl Polym Sci 93:1252
Benfarhi S, Decker C, Keller L, Zahouily K (2004) Eur Polym J 40:493
Uhl FM, Davuluri SP, Wong SC, Webster DC (2004) Polym 45:6175
Wang YY, Hsieh TE (2005) Chem Mater 17:3331
Chiang TH, Hsieh TE (2005) J Adhes Sci Tech 1:1
Decker C, Nguyen Thi Viet T, Decker D, Weber-Koehl E (2001) Polym 42:5531
Sui G, Zhang ZG, Chen CQ, Zhong WH (2002) Mater Chem Phys 78:349
Jana RN, Mukunda PG, Nando GB (2003) Polym Degrad Stab 80:75
Remiro PM, Cortazar M, Calahorra E, Calafel MM (2002) Polym Degrad Stab 78:83
Basfer AA (2002) Polym Degrad Stab 77:221
Crivello JV, Varlemann U (1995) J Polym Sci 33:2473
Wen J, Wikes GL (1996) Chem Mater 8:1667
Fischer HR, Gielgens LH, Koster TPM (1999) Acta Polym 50:122
Petrović ZS, Javni I, Waddon A, Bánhegyi G (2000) J Appl Polym Sci 76:133
Zhu ZK, Yang Y, Yin J, Wang XY, Ke YC, Qi ZN (1999) J Appl Polym Sci 73:2063
Burnside SD, Giannelis EP (1995) Chem Mater 7:1597
Fu X, Qutubuddin S (2001) Polym 42:807
Lee DK, Char KK (2002) Polym Degrad Stab 75:555
Laubender J, Chkoda L, Sokolowski M, Umbach E (2000) Synth Met 111–112:373
Yano K, Usuki A, Okada A, Kurauchi T, Kamigatio O (1993) J Polym Sci A Polym Chem 31:2493
Acknowledgements
This work was supported by the Ministry of Education, Taiwan, Republic of China within the Project of Excellence “Semiconducting Polymers and Organic Molecules for Electroluminescence: B. Development of Advanced Materials and Devices for Organic Light Emitting Diodes (OLED) Technology” under contract No. 91-E-FA04-2-4. The authors are also grateful to Dr. Chia-Hung Hsu at NSRRC, Taiwan, for the assistance and discussion on GIXRD measurements.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wang, YY., Hsieh, TE. Preparation of UV-curable intercalated/exfoliated epoxide/acrylateclays nanocomposite resins. J Mater Sci 42, 4451–4460 (2007). https://doi.org/10.1007/s10853-006-0623-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10853-006-0623-5