Influence of Monomer Polarity on Particle Formation in Emulsion Polymerization

  • N. Sütterlin


The particle numbers N of some polyacrylates and polymethacrylates are measured as a function of the Na-dodecyl sulfate concentration in a range of four magnitudes and it was tried to give an interpretation of the experimental curves, For styrene the theoretical value x = 0.6 of the relationship N ∝ Sx is found considerably above CMC. At low soap concentrations, x varies within a relatively narrow SDS range. With less polar monomers particularly high values of x are found just below CMC. This behavior may be indicative of a second mechanism of particle formation. Above CMC x decreases with increasing monomer polarity. One of the reasons is probably that the agglomeration tendency increases with the polarity. This increased agglomeration may be partly due to the lower soap equilibrium concentration at the interface of polar polymers.


Particle Number Particle Formation Emulsion Polymerization Latex Particle Methyl Acrylate 
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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • N. Sütterlin
    • 1
  1. 1.Röhm GmbHDarmstadtGermany

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