화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.13, No.5, 418-426, October, 2005
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One-Pack Cross-linkable Waterborne Methyl Ethyl Ketoxime-Blocked Polyurethane/Clay Nanocomposite Dispersions
Sankaraiah Subramani, Jung Min Lee, Jung Hyun Kim, and In Woo Cheong1, †
  • Department of Chemical Engineering, Yonsei University, Seoul 120-749, Korea
  • 1Department of Applied Chemistry, Kyungpook National University, Daegu 702-701, Korea
E-mail:
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 (MDI), 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:polyaddition;waterborne;polyurethane;dispersions;nanocomposite;morphology;blocked polyurethane
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