Adsorption of hydrophobically modified polyelectrolytes from dilute aqueous solution at the solid/liquid interface

Ryan Toomey, Matthew Tirrell, Phillip Schorr, Frank Bales, Yingfan Wang, Rigoberto Advincula, Jimmy Mays

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Abstract

Ellipsometry has demonstrated the sensitivity of polystyrene-polyacrylic acid (PS-PAA) adsorption to both pH and salt concentration. The equilibrium adsorbed amounts are greatest at low degrees of ionization or high ionic strength, while lowest at high degrees of ionization and low ionic strength. Furthermore, the adsorption is reversible. Increasing the pH at low salt concentrations forces chains out of the adsorbed layer reducing the adsorbed amount, observed with both ellipsometry and quartz crystal microbalance (QCM).

Original languageEnglish
Pages (from-to)1010-1011
Number of pages2
JournalAmerican Chemical Society, Polymer Preprints, Division of Polymer Chemistry
Volume40
Issue number2
Publication statusPublished - 1999 Aug
Externally publishedYes

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ASJC Scopus subject areas

  • Polymers and Plastics

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