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Investigators at Kyung Hee University Detail Findings in Nanocomposites

January 24, 2014

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Nanocomposites have been published. According to news reporting originating from Gyeonggi Do, South Korea, by NewsRx correspondents, research stated, "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)."

Our news editors obtained a quote from the research from Kyung Hee University, "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."

According to the news editors, the research concluded: "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/m(2) day while maintaining the optical transmittance."

For more information on this research see: Enhancement of barrier property of plastic substrate by intra-gallery polymerization for nanocomposites. Macromolecular Research, 2014;22(1):67-73. Macromolecular Research can be contacted at: Polymer Soc Korea, Room 601, Hatchon Building, 831 Yeoksam-Dong, Kangnam-Ku, Seoul 135-792, South Korea. (Springer -; Macromolecular Research -

The news editors report that additional information may be obtained by contacting Y.J. Park, Kyung Hee Univ, Reg Innovat Center Components & Mat Informat Display, Gyeonggi 446701, South Korea. Additional authors for this research include H.G. Kim, E.H. Kim and S.S. Kim (see also Nanocomposites).

Keywords for this news article include: Asia, Gyeonggi Do, South Korea, Nanotechnology, Emerging Technologies

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Source: Science Letter

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