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Polymer monolayers, dynamic behavior

The rheological properties of a fluid interface may be characterized by four parameters surface shear viscosity and elasticity, and surface dilational viscosity and elasticity. When polymer monolayers are present at such interfaces, viscoelastic behavior has been observed (1,2), but theoretical progress has been slow. The adsorption of amphiphilic polymers at the interface in liquid emulsions stabilizes the particles mainly through osmotic pressure developed upon close approach. This has become known as steric stabilization (3,4.5). In this paper, the dynamic behavior of amphiphilic, hydrophobically modified hydroxyethyl celluloses (HM-HEC), was studied. In previous studies HM-HEC s were found to greatly reduce liquid/liquid interfacial tensions even at very low polymer concentrations, and were extremely effective emulsifiers for organic liquids in water (6). [Pg.185]

See other pages where Polymer monolayers, dynamic behavior is mentioned: [Pg.196]    [Pg.225]    [Pg.212]    [Pg.86]    [Pg.489]    [Pg.582]    [Pg.245]    [Pg.244]    [Pg.474]    [Pg.84]    [Pg.82]    [Pg.732]    [Pg.377]    [Pg.741]    [Pg.583]   


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