Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
권호 표지

One-Pack Cross-linkable Waterborne Methyl Ethyl Ketoxime-Blocked Polyurethane/Clay Nanocomposite Dispersions

  • Subramani Sankaraiah (Department of Chemical Engineering, Yonsei University) ;
  • Lee Jung Min (Department of Chemical Engineering, Yonsei University) ;
  • Kim Jung Uyun (Department of Chemical Engineering, Yonsei University) ;
  • Cheong In Woo (Department of Applied Chemistry, Kyungpook National University)
  • Published : 2005.10.01
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Abstract

One-pack cross-linkable nanocomposites of waterborne methyl ethyl ketoxime (MEKO)-blocked aromatic polyurethane dispersion (BPUD) reinforced with organoclay (quaternary ammonium salt of Cloisite 25A) were synthesized by the acetone process using 4,4'-methylenedi-p-phenyl diisocyanate (MDl), poly(tetramethylene) glycol (PTMG), dimethylol propionic acid (DMPA), and methyl ethyl ketoxime (MEKO). Particle size, viscosity, and storage stability of these nanocomposites were investigated. TEM and XRD studies confirmed that the silicate layers of organophilic clay were exfoliated and intercalated at a nanometer-scale in the BPUD matrix.

Keywords

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