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Population Balance Model for Miniemulsion Polymerization, 2
Author(s) -
Sood Ashwini,
Awasthi Shailendra K.
Publication year - 2004
Publication title -
macromolecular theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 56
eISSN - 1521-3919
pISSN - 1022-1344
DOI - 10.1002/mats.200300025
Subject(s) - volume fraction , standard deviation , nucleation , population , radical , dispersity , mathematics , particle number , thermodynamics , particle (ecology) , chemistry , statistics , volume (thermodynamics) , polymer chemistry , physics , organic chemistry , demography , oceanography , sociology , geology
Summary: The predictions of the model developed in Part 1 of this series are compared with experimental values taken from literature. Initially, the method of solution of the population balance equation and the simulation algorithm are given. Various radical entry mechanisms are discussed in adequate detail. Plausible arguments are given to identify the correct radical entry mechanism. An expression to evaluate the radical exit coefficient is given. Model predictions of a number of variables are discussed. These include average number of radicals per particle, particle phase monomer volume fraction, average number of radicals averaged over all particles, monomer volume fraction averaged over all particles, variation of nucleation rate, variation of fraction of droplets nucleated, variation of average diameter, variation of standard deviation, variation of polydispersity index, and development of particle size distribution with time. Finally, model predictions for the variation of conversion with time for five different initiator concentrations, number average diameter, standard deviation and full distribution are compared with experimental values.Variation in the average number of radicals per particle with time, at different collocation points.