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Effect of Agitation on Density of Poly(vinyl acetate) Particles Produced in Suspension Polymerization Reactions
Author(s) -
Cordeiro Felipe B.,
Peixoto Luciana S.,
Oliveira Marco A. M.,
Pinto José Carlos
Publication year - 2014
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.201400017
Subject(s) - vinyl acetate , polymerization , suspension (topology) , suspension polymerization , chemical engineering , polymer chemistry , particle size , materials science , chemistry , polymer , composite material , copolymer , mathematics , homotopy , pure mathematics , engineering
Poly(vinyl acetate) particles are produced through suspension polymerization reactions at different agitation speed. As expected, particle size distributions are strongly affected by the increasing speed of agitation. Surprisingly, the latter also causes the decrease of particle densities, which can be explained by encapsulation of small water droplets by the viscous reacting medium. Encapsulation of water droplets can lead to the formation of hollow particles that can be observed through microscopic analyses.