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The interaction between co‐polymer of vinylpyrrolidone and vinylacetate and anionic surfactants in aqueous solutions
Author(s) -
Esumi Kunio,
Maekawa Tetsuya
Publication year - 1995
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02635792
Subject(s) - polymer , pulmonary surfactant , aqueous solution , chemistry , sulfonate , polymer chemistry , lithium (medication) , copolymer , inorganic chemistry , chemical engineering , organic chemistry , sodium , medicine , biochemistry , engineering , endocrinology
The interaction of co‐polymers of vinylpyrrolidone‐vinylacetate with anionic surfactants, such as lithium dodecyl sulfate (LiDS), lithium perfluorooctane sulfonate (LiFOS) in aqueous solution, has been studied. When the content of vinylacetate in the co‐polymers increases, reduction in the surface tension of co‐polymers alone becomes significant. In mixtures of co‐polymers and surfactants, co‐polymer‐LiFOS complexes are formed at lower surfactant concentration than that of co‐polymer‐LiDS. The micropolarity of the co‐polymers‐surfactant complexes depends on the composition of co‐polymers and is higher for co‐polymer‐LiFOS than that for co‐polymer‐LiDS. Further, the solubilization behavior of α‐(o‐tolylazo‐)‐β‐naphthylamine (Yellow OB) (Tokyo Kasei Co., Ltd., Tokyo, Japan) in the co‐polymer‐surfactant complexes is almost independent of the co‐polymer composition, but different from the surfactants, where a very low solubilized amount of Yellow OB is observed for co‐polymer‐LiFOS.