Static Viscoelastic Characteristics-Aggregation Structure Relationships of Monolayers at Air–Water Interface
- 1 June 1989
- journal article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 18 (6) , 1047-1050
- https://doi.org/10.1246/cl.1989.1047
Abstract
The melting temperature, Tm of fatty acid monolayers on the water surface was evaluated from the relationships between the subphase temperature dependence of static viscoelasticities and the aggregation structure of those monolayers. Tms of myristic, palmitic, and stearic acids in a monolayer state are ca. 278 K, 301 K, and 317 K, respectively. These values are 26–50 K lower than those in respective three-dimensional crystalline states. With an increase of subphase temperature, the aggregation state of those monolayers on the water surface varied from an oriented crystalline state, an unoriented crystalline one, an amorphous one and finally, a dissoluble unstable state.Keywords
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