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Synthesis of polystyrene-clay nanocomposites and investigation of their barrier property

폴리스티렌-클레이 나노 복합재료의 합성 및 차단 특성에 관한 연구

  • Dhungana, Biraj (Advanced Materials Science and Engineering, Kongju National University) ;
  • Son, Younggon (Advanced Materials Science and Engineering, Kongju National University)
  • Received : 2013.04.10
  • Accepted : 2013.05.09
  • Published : 2013.05.31

Abstract

In prepaparation of the high performance polymer/clay nanocomposite, it is essential to modify the hydrophillic $Na^+$-MMT to hydrophobic alkyl ammonium-MMT via organic surfactant. The organic surfactant, VDAC (vinylbenzyldimethyl-dodecylammonium chloride) was synthesized from two primary chemicals and $VDA^+$-MMT was prepared from $Na^+$-MMT through a cation exchange reaction between $Na^+$ and $VDA^+$ (vinylbenzyldimethyl-$dodecylammonium^+$) cation. $VDA^+$-MMT was then dispersed in styrene and polystyrene/$VDA^+$-MMT nanocomposite was fabricated by in-situ polymerization reaction. The clay dispersion and barrier property of the nanocomposite were investigated. From the investigations, it was confirmed that dispersion of the $VDA^+$-MMT was enhanced compared with that of $Na^+$-MMT and as a consequency of better dispersion, barrier property of organic solvent was improved in a great extent.

Keywords

Clay;nanocomposite;Polystyrene;In-situ polymerization

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