Influence of TAC on dispersion of aqueous nano alumina suspension
Zhao Wei , Yang De-an , Song Jian-jing , Yang Zi , Liang Chong , Xu Ming-xia , Xu Ting-xian
Journal of Wuhan University of Technology Materials Science Edition ›› 2004, Vol. 19 ›› Issue (3) : 4 -6.
Influence of TAC on dispersion of aqueous nano alumina suspension
The stability of aqueous nano alumina powder suspensions with and without dispersant tri-ammonium citrate (TAC) was investigated by measuring zeta potential at different pH values. The isoelectric point (IEP) of alumina powder shifts towards more acidic pH range by adding TAC dispersant. The results illustrate that adsorption of TAC on alumina powder surface existed in the aqueous suspension, which leads to a high stability of the suspension.
dispersant / suspension / isoelectric point
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