Adsorption of proteins at the liquid/air interface

Article Abstract:

Protein adsorption layers at liquid/fluid interfaces were described using thermodynamic equations derived as a generalization of a novel theory which takes into account the nonideality of enthalpy and entropy of mixing. The effect of the electric charge of the protein molecules on surface pressure was also considered in the proposed theory. Results showed that the derived isotherm is highly consistent with experimental data. The values of the isotherm parameters surface area per molecule, adsorption layer thickness and electric charge of the HSA molecule are approximate to values obtained by other methods in literature.

Analysis, Proteins, Adsorption, Polyelectrolytes

---

Surface pressure isotherm for the fluid state of langmuir monolayers

Article Abstract:

The equation of state for the monolayer comprised of the molecules of different sizes is modified to describe the fluid state of the molecules monolayer. The values of molecular areas of amphiphilic molecules estimated from the fitting of experimental data to the proposed equation are found to be quiet similar to those measured in independent grazing incidence X-ray diffraction experiments.

Usage, X-rays, X-ray diffraction, Optical properties, Thin films, Multilayered, Multilayered thin films

---

Influence of the two-dimensional compressibility on the surface pressure isotherm and dilational elasticity of dodecyldimethylphosphine oxide

Article Abstract:

A model for the surface pressure isotherm and high frequency limit of dilational elasticity of a surfactant adsorption layers is proposed which assumes a two-dimensional compressibility of adsorbed molecules. It is observed that while this compressibility of absorbed molecules has no significant effect on the isotherm, the elasticity is enormously affected.

Science & research, Influence, Oxides, Thermal properties

Similar abstracts:

• Abstracts: Hydrogen bond lifetime dynamics at the interface of a surfactant monolayer. Study of the surface thermal coefficient, bTP: evidence of phase transition at low surfactant concentrations. Example of solutions of Triton X100 in water and in water-ethylammonium nitrate media
• Abstracts: Vibrational properties of CO at the Pt(111)-solution interface: The anomalous stark-tuning slope. Carrier dynamics in TiO2 and Pt/TiO2 powders observed by femtosecond time-resolved near-infrared spectroscopy at a spectral region of 0.9-1.5 (mu)m with direct absorption method
• Abstracts: Derivation of force field parameters for SnO(sub 2)-H(sub 2)O surface systems from plane-wave density functional theory calculations
• Abstracts: Metastability release of the form [alpha] of trehalose by isothermal solid state vitrification
• Abstracts: Combining surface plasmon resonance and quartz crystal microbalance for the in situ investigation of the electropolymerization and doping/dedoping of poly(pyrrole). part 2

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.