Enhancement of barrier property of plastic substrate by intra-gallery polymerization for nanocomposites

You Jung Park; Hyun Gi Kim; Eun Hye Kim; Sung Soo Kim

Macromolecular Research, Vol.22, No.1, 67-73, January, 2014

DOI10.1007/s13233-014-2013-1 Export Citation

Enhancement of barrier property of plastic substrate by intra-gallery polymerization for nanocomposites

You Jung Park¹, Hyun Gi Kim¹, Eun Hye Kim², 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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2-(Methacryloyloxy)ethyl(4-benzoylbenzyl) dimethyl ammonium bromide (MDAB) was successfully synthesized and used as a photo initiator and intercalation agent to induce intra-gallery polymerization. MDAB effectively replaced the sodium ions in the inter-gallery layer of sodium montmorillonite (Na+-MMT) by the cationic exchange reaction, which was confirmed by inductively coupled plasma atomic emission spectroscopy (ICP-AES). The modification of Na+-MMT with MDAB increased the d-spacing, with the MDAB/Na+-MMT ratio of 2:1 doubling the initial d-spacing. Clay with modified MDAB was used to make a nanocomposite layer formation on a poly(ethylene naphthalate) (PEN) substrate by the photopolymerization of bisphenol A type epoxy diacrylate (EpA). Intra-gallery polymerization using MDAB attained more effective intercalation and better dispersion of the clay than extra-gallery polymerization using commercial organoclay. The clay content affected the barrier properties, and the best result was obtained at 5 wt% clay content, producing a water vapor transmission rate (WVTR) of 0.39 g/m2 day while maintaining the optical transmittance.

Keywords:nanocomposite;intra-gallery polymerization;barrier property;plastic substrate

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[2] Hideharu S, Kaoru S, Takeshi M, Yukihiro S, Jpn. J. Appl. Phys., 51, 05EB02 (2012)

[3] Kojima Y, Usuki A, Kawasumi M, Okada A, Fukushima, Kurauchi T, Kamigaito O, J. Mater. Res., 8, 1185 (1993)

[4] Choudalakis G, Gotsis AD, Eur. Polym. J., 45, 967 (2009)

[5] Giannelis EP, Krishnamorti R, Manias E, Adv. Polym. Sci., 138, 107 (1999)

[6] Giannelis EP, Adv. Mater., 8(1), 29 (1996)

[7] Harada M, Miyamoto T, Ochi M, J. Polym. Sci. B: Polym. Phys., 47(18), 1753 (2009)

[8] Leswzynska A, Njuguna J, Pielichowski K, Banerjee JR, Thermochim. Acta, 454(1), 1 (2007)

[9] Mostafa Y, Tahereh M, Nathalie C, Pascal H, Compos. Sci. Technol., 82, 47 (2013)

[10] Zahouily K, Decker C, Benfarhi S, Baron J, J. Proc. Rad. Tech. North Am., 309 (2002)

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[12] Burrows PE, Graff GL, Gross ME, Martin PM, Hall M, Mast E, Bonham C, Bennett W, Michalski L, Weaver M, Brown JJ, Fogarty D, Sapochak LS, Proc. SPIE, 4105, 75 (2001)

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