Polymer Monolayer Dynamics

摘要: This is to review viscoelastic properties of monomolecular layers polymers on the air/water interface,as probed principally by surface light scattering. The method a non-invasive one that makes useof spontaneous capillary waves, induced density fluctuations within liquids under thermal equilibrium.The waves are also called ripplons, and they propagate with temporal damping. interface isdetermined be molecularly smooth but still dielectric permittivity difference between air water islarge enough give rise strong Thus, scattering amounts analogof Brillouin in bulk liquid wherein spontaneously propagating phonons interact light. Thus,the power spectra scattered from provide propagation rate damping coefficient.Analysis based resonant mode-coupling lateral transverse recast into thelateral storage modulus corresponding loss modulus. By virtue two-dimensional characterof monolayers, many intriguing observations have been made respect amphiphilic andchain architecture homopolymers copolymers. Close connection correspondence staticproperties polymer monolayers their rheological behavior established, coversreports over past two decades.