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Diffusion‐controlled semibatch emulsion polymerization of styrene
Author(s) -
Chern C. S.
Publication year - 1995
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1995.070560212
Subject(s) - emulsion polymerization , monomer , styrene , kinetics , polymerization , diffusion , emulsion , polymer chemistry , chemistry , chemical engineering , thermodynamics , saturation (graph theory) , materials science , polymer , copolymer , organic chemistry , mathematics , physics , quantum mechanics , combinatorics , engineering
Semibatch emulsion polymerization of styrene under the monomer‐starved condition is strongly affected by the gel effect. A mechanistic model based on diffusion‐controlled reaction mechanisms is developed to predict the kinetics of semibatch emulsion polymerization. Experimental data available in the literature are employed to assess the proposed model. Reasonable agreement between the model predictions and experimental data is observed. The simulation results suggest that the reaction system approaches Smith–Ewart case II kinetics (n̄ = 0.5) when the concentration of monomer in the particles is close to the saturation value, whereas the reaction system under the monomer‐starved condition is characterized by diffusion‐limited reaction mechanisms (n̄≥0.5). © 1995 John Wiley & Sons, Inc.