Journal
SOFT MATTER
Volume 10, Issue 34, Pages 6499-6505Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4sm00782d
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Funding
- Saint-Petersburg State University [12.38.241.2014]
- Russian Foundation of Basic Research (RFFI) [14-03-00670_a]
- National Science Council of Taiwan (joint project RFFI-NSC) [12-03-92004-HHC_a]
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The dependence of the dilational surface elasticity on the surface pressure of the spread monolayers of polystyrene microparticles is studied at the water-air interface. The surface rheological measurements together with the data from optical methods allow the division of the whole range of surface pressures into three zones characterized by different monolayer structures. The extremely high surface elasticity (similar to 500 mN m(-1)) at surface pressures close to 30 mN m(-1) is similar to the results for the adsorption layer of the complexes formed between silica particles and surfactant molecules and is probably caused by strong hydrophobic attraction between the particles. At the same time, some other characteristic features of the viscoelasticity of the monolayers of polysterene microparticles differ strongly from the properties of previously studied systems.
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