Determination of rate constants for the rapid coagulation of polystyrene microspheres using photon correlation spectroscopy
- 1 January 1989
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 85 (10) , 3529-3536
- https://doi.org/10.1039/f19898503529
Abstract
The rapid aggregation of polystyrene microspheres was investigated using a photon correlation technique. An innovative method of obtaining the rate constant from the exponential autocorrelation function has been developed. The aggregation obeys Smoluchowski kinetics very well up to two half-lives and satisfactorily up to four half-lives. A rate constant of 2.0 × 10–12 cm3 s–1 was deduced from these experiments. The technique provides a quick and relatively routine evaluation of the rate constant for the aggregation of monodisperse spherical suspensions.Keywords
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