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The interaction of both Triton X-100 and poly(ethylene)oxide (PEO-2000) with polymethacrylic acid (PMAA) in aqueous solutions has been investigated by different methods: tensiometry, conductivity, viscometry, pH- and optical density measurement. The obtained results testify, that interaction of PMAA with the nonionic surfactants of different nature is accompanied by non-additive changes of physico-chemical properties and phase separation of binary systems. Thus, the character of influence of nonionic component depends on its nature. These changes take place in the clearly defined concentration ranges (1x10-4-1x10-3 M for Triton X-100 and 1x10-2-1x10-1 M for more high-molecular PEO-2000) and they are caused by intramolecular PMAA-surfactant complex formation. The experimental results clearly reveal, that important role in complex formation is played by hydrogen bonds. For investigated systems both the critical aggregation concentration (CAC) and the saturation concentration (C2) were calculated, and the idealized schema of the mechanism of polymer-surfactant interaction was proposed.
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Tom
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957--974
Opis fizyczny
Bibliogr. 29 poz., rys.
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autor
autor
autor
- Department of Physical and Colloidal Chemistry, Ivan Franko National University of Lviv, 6, Kyryla & Mefodija St., 79005 Lviv, Ukraine
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ4-0002-0012