The behaviour of monomolecular layers prepared on a liquid surface may be considered as a limiting case of adsorption. In the present work, measurements of surface-pressure isotherms have been used to examine the effect of the solvent (tetrahydrofuran, chloroform) and polymer concentration on the formation of poly(o-toluidine) (PoTl) and poly(o-methoxyaniline) (PoMA) monolayers at the water surface. The PoTl monolayer exhibited a hysteresis loop when the PoMA and PoTl monolayers were studied under compression/expansion conditions. In contrast, the mobility of the monomer units in the PoMA films formed at the water surface enabled them to rapidly restore their structure.
References
1.
AdamsonA.W.GastA.P. (1997) Physical Chemistry of Surfaces, Wiley, New York.
