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Surfactants in heterophase polymerization: A study of film formation using force microscopy
Author(s) -
Lam S.,
Hellgren A. C.,
Sjöberg M.,
Holmberg K.,
Schoonbrood H. A. S.,
Unzué M. J.,
Asua J. M.,
Tauer K.,
Sherrington D. C.,
Goni A. Montoya
Publication year - 1997
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/(sici)1097-4628(19971003)66:1<187::aid-app22>3.0.co;2-y
Subject(s) - pulmonary surfactant , styrene , polymer chemistry , polymerization , acrylate , sodium , emulsion polymerization , chemical engineering , chemistry , butyl acrylate , materials science , acrylic acid , polymer , organic chemistry , monomer , copolymer , engineering
Film formation of three different latices was studied using atomic force microscopy. The latices were made from a mixture of butyl acrylate, styrene, and acrylic acid using either a polymerizable or an unreactive anionic surfactant as an emulsifier. Sodium 11‐crotonoyloxyundecan‐1‐ylsulfate and sodium 3‐(sulfopropyl)tetradecylmaleate were used as a reactive surfactant and the unreactive surfactant was sodium dodecylsulfate (SDS). The conventional surfactant was found to migrate to the surface of the latex film to a much greater extent than did the reactive surfactants; however, also, the latter were incompletely anchored to the particle. The maleate surfactant was bound to a higher degree than was the crotonate, a finding which is in line with the relative reactivities of the two surfactants. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 66: 187–198, 1997