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Compartmentalization Effects on Miniemulsion Polymerization with Oil‐Soluble Initiator
Author(s) -
Costa Cristiane,
Timmermann Suzi A. S.,
Pinto Jose Carlos,
Araujo Pedro H. H.,
Sayer Claudia
Publication year - 2013
Publication title -
macromolecular reaction engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 32
eISSN - 1862-8338
pISSN - 1862-832X
DOI - 10.1002/mren.201200066
Subject(s) - miniemulsion , polymerization , polymer chemistry , compartmentalization (fire protection) , radical polymerization , limiting , kinetics , kinetic energy , materials science , particle (ecology) , chemistry , bulk polymerization , particle size , copolymer , emulsion polymerization , chemical engineering , organic chemistry , polymer , engineering , enzyme , mechanical engineering , physics , oceanography , quantum mechanics , geology
A dynamic mathematical model is developed to represent miniemulsion polymerization reactions using oil‐soluble initiator. Both simulation and experimental results show that the evolution of conversion varies with particle diameter and that reactions become slower as the particle size is increased. For each experimental condition, a limiting diameter is obtained, above which the reaction kinetics does not change anymore with the diameter. These results are explained in terms of the compartmentalization of growing radicals during the miniemulsion polymerizations. The evolution of conversion in bulk polymerizations shows that the kinetic behavior above the limiting diameter is similar to the kinetic behavior of bulk reactions.