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Hydrodynamic surface waves in concentrated polymer solutions in the presence of surface adsorption
- Source :
- The Journal of Chemical Physics. 107:5898-5906
- Publication Year :
- 1997
- Publisher :
- AIP Publishing, 1997.
-
Abstract
- A theory of light scattering from the polymer solution/air interface that includes the effect of surface adsorption is developed. The polymer solution is assumed to exhibit a linear viscoelastic response. The surface laser light scattering (SLLS) spectrum is calculated from surface hydrodynamic equations appropriate for linear viscoelastic fluids using the method of initial value problems. Numerical calculations are made to investigate the effects of surface tension and dilational modulus on the SLLS spectrum. The results show that the SLLS spectrum from polymer solutions having a high surface tension solvent displays a two-peak structure. The high-frequency peak exhibits more capillary wave character, and diminishes rapidly with decreasing surface tension or increasing dilational modulus as a result of surface adsorption. The two-peak structure is, however, found to be much less pronounced in a solution with a low surface tension solvent.
- Subjects :
- Capillary wave
Materials science
General Physics and Astronomy
Thermodynamics
Specific surface energy
Light scattering
Condensed Matter::Soft Condensed Matter
Surface tension
symbols.namesake
Adsorption
Capillary length
Gibbs isotherm
symbols
Capillary surface
Physical and Theoretical Chemistry
Subjects
Details
- ISSN :
- 10897690 and 00219606
- Volume :
- 107
- Database :
- OpenAIRE
- Journal :
- The Journal of Chemical Physics
- Accession number :
- edsair.doi...........f3ea490e7daf02588b9a84014e8f940f