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Butyl acrylate and vinyl acetate semicontinuous emulsion copolymerizations: study of stabilization performance
Author(s) -
Araújo Pedro H. H.,
Giudici Reinaldo,
Sayer Claudia
Publication year - 2004
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.200450214
Subject(s) - vinyl acetate , monomer , butyl acrylate , copolymer , polymer chemistry , chemical engineering , emulsion , emulsion polymerization , materials science , acrylate , kinetics , particle (ecology) , acrylic acid , particle size , polymer , chemistry , composite material , oceanography , physics , quantum mechanics , engineering , geology
The use of small amounts of carboxylic monomers in industrial recipes with high solids content enhances colloidal stability due to the presence of carboxylic groups on the outer surface of the polymer particles. Understanding the relationship between several different but interdependent phenomena, including particle nucleation, kinetics, particle aggregation, monomer type, solids content, the role of the carboxylic monomer and the influence of reaction temperature may improve the control over particle size and latex stability. In this work, the kinetics and stabilization performance of semicontinuous vinyl acetate (VA) and butyl acrylate (BA) emulsion copolymerization reactions are studied under different reaction temperatures, acrylic acid (AA) concentrations, solids contents and monomer feed compositions. Results show that choosing optimal AA concentrations and reaction temperatures are key factors in order to enhance the stabilization performance in semicontinuous VA/BA emulsion copolymerization.