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- Rheology (1) (entfernen)
Alumina sols were prepared using a modified
Yoldas procedure, thus resulting in sols with high solids
content, excellent long term stability and small particle size.
PH-value ranged between 3.7 and 0.6. Sols were characterised
using rheological, UV-vis transmission and particle
size measurements. Depending on NO3-/Al molar ratio as
well as solids content, sols vary. Analysis of reduced viscosities
indicate the formation of chainlike polymeric species
above a critical solids fraction.