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The Effect of Particle Size on Rheological Properties of Highly Concentrated Ag Nanosol

초 고농도 Ag 나노 졸의 입자크기 제어가 잉크 점성거동에 미치는 영향

  • Song, Hae-Chon (Device Material Research Center, Advanced Material Division, Korea Research Institute of Chemical Technology) ;
  • Nham, Sahn (Department of Materials Engineering, Korea University) ;
  • Lee, Byong-Seok (Device Material Research Center, Advanced Material Division, Korea Research Institute of Chemical Technology) ;
  • Choi, Young-Min (Device Material Research Center, Advanced Material Division, Korea Research Institute of Chemical Technology) ;
  • Ryu, Beyong-Hwan (Device Material Research Center, Advanced Material Division, Korea Research Institute of Chemical Technology)
  • 송해천 (한국화학연구원 소자재료연구센터) ;
  • 남산 (고려대학교 신소재공학과) ;
  • 이병석 (한국화학연구원 소자재료연구센터) ;
  • 최영민 (한국화학연구원 소자재료연구센터) ;
  • 류병환 (한국화학연구원 소자재료연구센터)
  • Published : 2009.01.31

Abstract

The rheological properties of highly concentrated Ag nano sol depending on particle size were studied. The Ag nano sol was prepared by reducing the Ag ion in aqueous solution. The size of Ag nano particle was controlled by two steps of nucleation and growth, and the thickness of adsorption layer was varied by molecular weight of polyelectrolytes. The polyelectrolytes acted as not only ionic complex agent in ionic state and but also dispersant after formation of Ag nano sol. The effective volume was controlled by combination of varying the molecular weight of polyelectrolytes and the size Ag nano sol. The particle size and the viscosity of nano sol were characterized by particle size analyzer, HR-TEM and cone & plate viscometer. It was found that the 10 nm and 40 nm-sized Ag nano sols were prepared by controlling the nucleation and growth steps, respectively. Finally, we could prepare highly concentrated Ag nano sol over 50 wt%.

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  1. Inkjet Printing Technology Still in Progress vol.48, pp.6, 2011, https://doi.org/10.4191/kcers.2011.48.6.543