Competitive adsorption of 2,4,7,9-tetramethyl-5-decyn-4,7-diol (TMDD) with octanesulfonic acid Na+
salt, decanesulfonic acid Na+ salt, dodecanesulfonic acid Na+ salt, and protonated and deprotonated octanoic
acid was observed using sum frequency generation (SFG) spectroscopy. SFG spectroscopy allows the direct
observation of the relative surface density of TMDD. Various models of competitive adsorption for mixed
surfactant systems were compared. Models taking into account kinetic, steric, and electrostatic factors
were compared to the experimental data. For systems not undergoing a two-dimensional phase transition,
a model incorporating steric and kinetic factors provided the best agreement with experimental observations.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.