Polymer-surfactant Interactions

被引:0
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作者
A. Capalbi
C. La Mesa
机构
[1] Universitŕ di Roma ‘La Sapienza’,Dipartimento di Chimica
关键词
conductivity; interactions; phase diagrams; polymers; surface tension; surfactants;
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摘要
Aqueous solutions containing poly(vinyl-pyrrolidone) and sodium caprylate, or poly(vinyl-pyrrolidone) and tetraethylammonium perfluorooctanesulfonate,respectively, have been investigated by volumetric, ionic conductivity and surface tension methods. The presence of an interaction region has been determined from conductivity and surface tension. The width of such a region depends on the amount of polymer in the mixture,temperature, surfactant content and added electrolyte (NaCl). The observed behaviour was explained in terms of the combined effects played by the alkyl-chain hydophobicity, polar head group(s) and counter-ions.
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页码:233 / 241
页数:8
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