title: Influence of pH on sphingomyelin monolayer at air/aqueous solution interface.
abstract: The pH dependence of the interfacial tension is an important factor in the behavior of sphingomyelin (SM) monolayers. We developed a theoretical model to describe this dependence in which the interfacial tension and molecular area contributions of each sphingomyelin form were additive and dependent on pH. The interfacial tension values and the molecular areas values for the SMH(+) and SMOH(-) forms of sphingomyelin were calculated and the proposed model was experimentally verified. The theoretical predictions agreed with the experimental results for pH values ranging from 2 to 12.
authors.affiliation: Institute of Chemistry, University in Bialystok, Al. J. Pilsudskiego 11/4, 15-443 Bialystok, Poland. aneta@uwb.edu.pl
authors.forename: Aneta Dorota
authors.initials: AD
authors.lastname: Petelska
authors.forename: Monika
authors.initials: M
authors.lastname: Naumowicz
authors.forename: Zbigniew Artur
authors.initials: ZA
authors.lastname: Figaszewski
mesh_terms: D000388:Air; D006863:Hydrogen-Ion Concentration; D012996:Solutions; D013109:Sphingomyelins / Q000737:chemistry*; D013499:Surface Properties; D014867:Water / Q000737:chemistry
chemical_list: D012996:Solutions; D013109:Sphingomyelins; D014867:Water