Record number :
Title of article :
Mixed monolayers of dipalmitoyl phosphatidylcholine and ethyl palmitate at the air/water interface
Author/Authors :
Barbara Gzyl*، نويسنده , , Maria Paluch، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
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Abstract :
The behaviour of monolayers containing dipalmitoyl phosphatidylcholine and ethyl palmitate and their mixtures at different molar fraction, using surface pressure–molecular area results, was investigated. The negative deviation from additivity of the mean molecular areas as a function of the mixture composition indicates the miscibility. The miscibility was confirmed by applying the two-dimensional phase rule, since the collapse pressure values vary with the composition of the mixtures. Also the free energy of mixing DGmix and the excess free energy of mixing DGE mix were determined. The negative values of DGmix and DGE mix indicate that the mixed monolayers are thermodynamically more stable compared to the pure ones and that the compounds in the two dimensional state experience mainly attractive interactions
Keywords :
Langmuir monolayers , Ethyl palmitate , dipalmitoyl phosphatidylcholine , Lipid mixtures
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science
Serial Year :
Link To Document :