Langmuir Films of Poly(o-Toluidine) and Poly(o-Methoxyaniline) at the Water–Air Interface

Abstract

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.

Effect of polymer matrix on the structure and luminescence properties of barium zirconate nanocrystals

“…PPA was synthesized by electrochemical polymerization [17], PVA used as commercial product (P/2 mark), PEDOT in the form of an 1.5% aqueous suspension of polymer stabilized by an anionic surfactant, polystyrene sulfonic acid from ALDRICH. Polystyrene was synthesized by suspension polymerization of styrene in the presence of peroxide initiators of polymerization: benzoyl peroxide and ammonium persulfate, with a stabilizer of suspension: starch, as described in [18].…”