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1 Polish Journal of Chemistry

1 2006

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Polymer-Surfactant Interaction and Physico-Chemical Properties of Polymethacrylic Acid-Triton X-100 and Polymethacrylic Acid-Poly(ethylene)oxide Aqueous Systems

Tugay A., Zakordonskiy V., Sołtys M.

Polish Journal of Chemistry

2006

Vol. 80, nr 6

957-974

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.