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The decomposition of potassium persulphate used as initiator in emulsion polymerization
Author(s) -
Okubo Masayoshi,
Mori Toshiyuki
Publication year - 1990
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19900310112
Subject(s) - chemistry , emulsion polymerization , monomer , polystyrene , polymer chemistry , polymerization , decomposition , emulsion , aqueous solution , styrene , potassium , micelle , adsorption , copolymer , chemical engineering , organic chemistry , polymer , engineering
The decomposition rate of potassium persulphate in various aqueous solutions was measured by isotachophoresis using pure water, sodium dodecyl sulphate (SDS) solution, emulsifier‐free polystyrene emulsion, SDS solution containing acrylamide monomer or an SDS‐containing emulsion polymerization system for styrene. “Free” SDS molecules in the monomolecular dispersed state were found to increase markedly the decomposition rate, whereas those which formed micelles and became adsorbed onto polystyrene particles did not increase it. The acceleration phenomenon in the former case disappeared in the presence of a small amount of monomer.