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Effect of nucleatipn profile on particle‐size distribution
Author(s) -
Sathyagal A. N.,
McCormick A. V.
Publication year - 1998
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690441020
Subject(s) - nucleation , particle size distribution , dispersity , dispersion (optics) , particle (ecology) , particle size , colloid , distribution (mathematics) , population , chemical physics , statistical physics , materials science , chemistry , mathematics , physics , thermodynamics , optics , mathematical analysis , oceanography , demography , sociology , polymer chemistry , geology
Nucleation transients are important features in the reactive generation of monodisperse colloids from solution. Many previous theoretical investigations, both analytical and numerical, have addressed the roles of colloid aggregation or of direct growth from solution. Few have addressed the role of nucleation transients on the size distribution. The population balance model was used to study the effect of nucleation transients on an aggregating colloidal dispersion. (To simplify the problem, growth was neglected.) The focus was on whether, under the action of aggregation alone, extended and divided nucleation periods in some cases can lead to a very narrow particle‐size distribution. Our results support previous treatments (Look et al, 1990; Bogush and Zukoski, 1991b) suggesting this is the case. Our general approach also offers additional insights, such as strategies to manipulate the nucleation transients to independently tune the average particle size and the variance of the distribution.