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Effect of Particle Volume Fraction on the Gelation Behavior of the Temperature Induced Forming (TIF) Aqueous Alumina Suspensions
Author(s) -
Yang Yunpeng,
Sigmund Wolfgang M.
Publication year - 2001
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2001.tb00975.x
Subject(s) - volume fraction , aqueous solution , rheology , materials science , viscosity , volume (thermodynamics) , particle (ecology) , mass fraction , particle size , chemical engineering , composite material , thermodynamics , chemistry , physics , oceanography , engineering , geology
Stable aqueous Al 2 O 3 suspensions that can be flocculated by increasing temperature were prepared using tri‐ammonium citrate and poly(acrylic acid) (PAA). Effects of particle volume fraction on the rheological properties of Al 2 O 3 suspensions were investigated. The modified Dougherty–Krieger equations were used to describe the volume fraction dependence of relative viscosity for both the PAA‐addition and PAA‐free suspensions. An equation using percolation model was proposed to analyze the temperature and volume fraction dependence of the relative viscosity of the suspensions. The calculated results were in good agreement with the experimental data.