6533b7d5fe1ef96bd1264f89

RESEARCH PRODUCT

Crystal growth kinetics in deionised two-component colloidal suspensions

Andreas StippJianing LiuThomas Palberg

subject

Phase boundaryColloidAqueous solutionChemistryKineticsPolymer chemistryMixing (process engineering)Analytical chemistryParticleCrystal growthCharged particle

description

We report first measurements of the crystal growth velocity in deionised two-component aqueous suspensions of charged polystyrene latex spheres. The size ratio was 1:1.3 and mixing ratios up to 18% of the larger particle were investigated. For the pure components limiting growth velocities of (V ∞,120 = 4.8 µm s−1 and V ∞,156 = 2.9 µm s−1) were observed. In the mixture v drops with increasing mixing ratio even below (V ∞,156) of the large minority component. Careful monitoring of the deionisation procedure excludes the explanation of enhanced ionic contamination. Alternatives based on the kinetics of particle attachment and the position of the phase boundary are discussed.

yearjournalcountryeditionlanguage
2007-08-12
https://doi.org/10.1007/3-540-45725-9_20