Dynamic properties of heterogeneous surface films: Multiple scattering of capillary waves

Application of Brewster angle microscopy and fractal analysis in investigations of compressibility of Langmuir monolayersPolymer monolayers with a small viscoelastic linear regime: Equilibrium and rheology of poly(octadecyl acrylate) and poly(vinyl stearate)The viscoelastic moduli ͑elasticity and dilational viscosity͒ of monolayers of P4HS have been studied over a broad frequency range ͑0.1 mHz-200 kHz͒ using a combination of relaxation and capillary waves techniques. The analysis of the surface pressure, the elasticity and the viscosity in the semidilute regime show that the air-water interface is a poor ͑near-⌰͒ solvent for the monolayer. The results of viscoelastic moduli show that there is a broad relaxation process in the low-frequency range (Ͻ1 Hz), and another very intense relaxation process centered in the kHz region. This behavior contrasts with the one previously found for PVAc, a polymer for which the interface is a good solvent. For PVAc the relaxation found at low frequencies is much narrower, and two processes are clearly distinguished at higher frequencies: one centered at 500 Hz and another one at 40 kHz.

show abstract

Dynamic properties of heterogeneous surface films: Multiple scattering of capillary waves

Abstract: Surface tension and capillary waves at the nematic-isotropic interface in ternary mixtures of liquid crystal, colloids, and impurities

Cited by 4 publications

References 24 publications

Multiple scattering of surface waves by two-dimensional colloid systems

Multiple scattering of surface waves by two-dimensional colloid systems

Dilational surface visco-elasticity of polyelectrolyte/surfactant solutions: Formation of heterogeneous adsorption layers

Dilational rheology of Langmuir polymer monolayers: Poor-solvent conditions

Contact Info

Product

Resources

About