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Microemulsion Polymerization Modeling Based on the Experimental Conversion Trend and its Derivative
Author(s) -
LópezSerrano F.,
LópezAguilar J. E.,
Mendizábal E.,
Puig J. E.,
Álvarez J.
Publication year - 2008
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200851110
Subject(s) - microemulsion , polymerization , polymer , nucleation , materials science , monomer , polymer chemistry , radical polymerization , styrene , work (physics) , methyl methacrylate , chemical engineering , thermodynamics , chemistry , copolymer , organic chemistry , pulmonary surfactant , composite material , physics , engineering
In this work, the microemulsion polymerization modeling problem is addressed with an integrodifferential approach. The procedure was applied to experimental data, previously presented, on the microemulsion polymerization of hexyl methacrylate (C 6 MA) and styrene (STY). It was found that: (i) the nucleation rate is not linear with time, as assumed before, (ii) a vitreous effect is observed even in reactions where the polymer's glass transition temperature is lower than the reaction temperature, (iii) radical entry to polymer particles and coagulation among particles are negligible, (iv) the rate decrease interval is also caused by a reduction of active sites, (v) a mechanism in which micelles provide monomer to living particles was detected, and (vi) a simple three‐parameter mechanistic model was obtained, capable of describing the studied systems.