B. Kellner, D. Cadenhead
1979
Citations
0
Influential Citations
29
Citations
Journal
Chemistry and Physics of Lipids
Abstract
Abstract The behaviour of a homologous series of methyl hydroxyhexadecanoates at the air/water interface is described and compared to the behaviour of the respective parent acids in an effort to cast further light on the interfacial behaviour of simple molecules containing two different hydrophilic groups. Expansion of the isotherms upon esterification is observed for the 2-, 3-, and 9-hydroxy compounds, the extent of which is interpreted in terms of changes in head group interactions. The 16-hydroxy compounds show anomalous surface pressure and surface potential behaviour which is interpreted as being due to an inversion of the molecule at the interface, i.e., the hydroxyl group acts as the primary group in the methyl ester, whereas it acts as the secondary polar group in the acid.