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Coagulative stability of miniemulsion droplets
Author(s) -
Sood Ashwini
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.28082
Subject(s) - miniemulsion , pulmonary surfactant , hexadecane , ostwald ripening , polymerization , chemical engineering , monomer , polymer chemistry , coagulation , chemistry , materials science , organic chemistry , polymer , nanotechnology , psychology , psychiatry , engineering
Miniemulsion droplets were stabilized with a mixed emulsifier system consisting of an anionic surfactant such as sodium dodecyl sulfate and a costabilizer, which is typically a low‐water‐soluble, long‐chain alkane or alcohol such as hexadecane or hexadecanol. The surfactant, anionic in nature, provided an electrostatic barrier against coagulation, and the costabilizer retarded molecular diffusion of the monomer or Ostwald ripening. The coagulation mechanism operative for the stabilization of the miniemulsion droplets is theoretically considered here. The understanding provides insight into the role of the surfactant. The fate of the miniemulsion droplets during the course of polymerization is also discussed. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008