Journal of Industrial and Engineering Chemistry

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Effects of physicochemical treatments of illite on the thermo-mechanical properties and thermal stability of illite/epoxy composites

  • Jeong, Euig-Yung (Department of Fine Chemical Engineering and Applied Chemistry, BK21-E2M, Chungnam National University) ;
  • Lim, Jae-Won (Department of Fine Chemical Engineering and Applied Chemistry, BK21-E2M, Chungnam National University) ;
  • Seo, Kyeong-Won (Hyochang Corp.) ;
  • Lee, Young-Seak (Department of Fine Chemical Engineering and Applied Chemistry, BK21-E2M, Chungnam National University)
  • Published : 2011.01.25
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Abstract

In this study, the effects of physicochemical treatments of illite on thermo-mechanical properties and thermal stability of the hybrid illite/epoxy composites were investigated. Illite was chemically modified with octadecylamine (ODA), to become more organophilic and also physically modified by wet ballmilling process, so that the illite dispersion in the epoxy matrix and interfacial adhesion between illite and epoxy resin could be improved. Then, as-received illite and physically and/or chemically modified illites were mixed with epoxy separately to produce hybrid illite/epoxy composites and their thermomechanical properties and thermal stability were investigated. Chemical modification was confirmed with FTIR and the aforementioned properties of illite/epoxy composites were characterized with SEM, DMA, and TGA. IR results show that ODA modification of illite was successful and thermo-mechanical properties were enhanced with illite introduction to the epoxy resin, especially when physically and chemically modified illite was added, showing about 100% increase in storage and loss modulus, compared to the pure epoxy. However, thermal stability was not enhanced by forming the illite/epoxy composites, because the composites prepared in this study were intercalated and flocculated illite/epoxy microcomposites.

Keywords

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