Polymer adsorption on surfactant monolayers and heterogeneous solid surfaces

Modeling surfactant adsorption on hydrophobic surfaces.

Surfactant adsorption on hydrophobic surfaces is of current interest in attempts to solubilize single-wall carbon nanotubes and to render quantum dots biocompatible. A coarse grained method is presented for incorporating a hydrophobic surface into existing liquid force fields by appealing to statistical mechanics and probability theory. The dimensionality problem which arises is overcome with a...

Representation of Adsorption Data for the Case of Energetically Heterogeneous Solid Surfaces Using Artificial Neural Network

Non-equilibrium dynamics of single polymer adsorption to solid surfaces.

The adsorption of polymers to surfaces is crucial for understanding many fundamental processes in nature. Recent experimental studies indicate that the adsorption dynamics is dominated by non-equilibrium effects. We investigate the adsorption of a single polymer of length N to a planar solid surface in the absence of hydrodynamic interactions. We find that for weak adsorption energies the adsor...

Polymer Depletion Forces and Surfactant Adsorption

Introduction Lung surfactant is a mixture of lipids, primarily dipalmitoylphosphatidylcholine, and several specific proteins, that lines the interior of the lung alveoli. Lung surfactant lowers the interfacial tension in the lungs, thereby insuring a negligible work of breathing and uniform lung inflation. The absence of lung surfactant in premature infants leads to neonatal Respiratory Distres...

Multilayer Adsorption of Polyatomic Species on Homogeneous and Heterogeneous Surfaces

In this work we study the multilayer adsorption of polyatomic species on homogeneous and heterogeneous bivariate surfaces. A new approximate analytic isotherm is obtained and validated by comparing with Monte Carlo simulation. Then, we use the well-known Brunauer-Emmet-Teller’s (BET) approach to analyze these isotherms and to estimate the monolayer volume, vm. The results show that the value of...