title: Interfacial tension of the lipid membrane formed from lipid-fatty acid and lipid-amine systems.
abstract: Interfacial tension has been determined for phosphatidylcholine-stearic acid and phosphatidylcholine-stearylamine membranes. Phosphatidylcholine, stearic acid and stearylamine were used in the experimental. The interfacial tension values of the pure components are 1.62x10(-3) N/m, - 1.54x10(-2) N/m and 4.40x10(-3) N/m (hypothetical values), respectively. The 1:1 complexes were formed during formation of phosphatidylcholine-stearic acid and phosphatidylcholine-stearylamine membranes. The following parameters describing the complexes were determined: the surface concentrations of the lipid membranes formed from these complexes, A(3)(-1), the interfacial tensions of such membranes, gamma(3) and the stability constants of these complexes, K.
authors.affiliation: Institute of Chemistry, University of Bialystok, Al. J. Pilsudskiego 11/4, 15-443 Bialystok, Poland.
authors.forename: Aneta D
authors.initials: AD
authors.lastname: Petelska
authors.forename: Monika
authors.initials: M
authors.lastname: Naumowicz
authors.forename: Zbigniew A
authors.initials: ZA
authors.lastname: Figaszewski
mesh_terms: D000588:Amines / Q000737:chemistry*; D010713:Phosphatidylcholines / Q000737:chemistry*; D013229:Stearic Acids / Q000737:chemistry*; D013500:Surface Tension
chemical_list: D000588:Amines; D010713:Phosphatidylcholines; D013229:Stearic Acids; C031183:stearic acid; C009317:stearylamine