Preparation of Polyvinyl Acetate Latexes Using Polymethacrylic Acid Surfactant Mixtures: Locus of the Polymethacrylic Acid

  • W. E. Daniels
  • C. T. Enos
  • J. G. Iacoviello
  • J. H. Frost
  • J. W. Vanderhoff
  • S. M. Ahmed


Polymethacrylic acid functions as a protective colloid in the emulsion polymerization of vinyl acetate, particularly in combination with anionic-nonionic surfactants. The combination of polymethacrylic acid and a nonylphenolethoxylate ester of phosphoric acid gives high-solids latex which shows excellent stability to mechanical shear and reezing-and-thawing. The locus of the polymethacrylic acid in this system was determined by ion exchange followed by conductometric titration, serum replacement using both Millipore and Nuclepore filters followed by conductometric titration, and exhaustive extraction of the dried films with hot water followed by analysis of the fractions by infrared spectroscopy and thermogravimetric analysis. These results show that 70-80% of the polymethacrylic acid is strongly adsorbed on the polyvinyl acetate latex particle surfaces and the remainder is solute polymer in the aqueous phase; little, if any, is grafted to the particle surface. The excellent stability of this latex is attributed speculatively to both steric and electrostatic repulsion arising from the adsorbed polymethacrylic acid.


Latex Particle Polyvinyl Acetate Vinyl Acetate Serum Replacement Polyacrylic Acid 
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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • W. E. Daniels
  • C. T. Enos
  • J. G. Iacoviello
  • J. H. Frost
    • 1
  • J. W. Vanderhoff
  • S. M. Ahmed
    • 2
  1. 1.Air Products and Chemicals, Inc.PiscatawayUSA
  2. 2.Emulsion Polymers InstituteLehigh UniversityBethlehemUSA

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