Competitive adsorption of macromolecules and real-time dynamics of Vroman-like effects

Vladimir M. Gun'Ko, Lyuba I. Mikhalovska, Paul E. Tomlins, Sergey V. Mikhalovsky

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Quasi-elastic light scattering (QELS) and quartz crystal microbalance (QCM) non-equilibrium and equilibrium studies of competitive interactions of pairs of polymers and proteins with fumed silica and ceramic coatings deposited on QCM crystals show complex interfacial behaviour. The effects observed depend on the adsorption sequence of co-adsorbates, their chemical structure and the morphology and chemical structure of the adsorbent. The equilibrium adsorption and dynamics of interactions of macromolecules with bare adsorbent surface and surface covered with pre-adsorbed polymer or protein, are compared in terms of the distribution functions of the Gibbs free energy of adsorption, which varied from -25 kJ mol-1 on a bare surface to almost 0 kJ mol-1 on a polymer or protein coated surface.

Original languageEnglish
Pages (from-to)4476-4485
Number of pages10
JournalPhysical Chemistry Chemical Physics
Volume13
Issue number10
DOIs
Publication statusPublished - Mar 14 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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