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Determination of the liquid surface composition of a binary mixture by photoelectron spectroscopy — adiponitrile and tris(dioxa-3,6-heptyl)amine

✍ Scribed by R.E. Ballard; Jimmy Jones; Elizabeth Sutherland

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
313 KB
Volume
112
Category
Article
ISSN
0009-2614

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Application of the Gibbs adsorption formula to surface composition measurements and surface tensions for mixtures of the liquids decanol and t~~dioxa-3.6-hepty~)amine indicates a surface depth or one monolayer and molecular areas of 90 and 300 i\' per molecule respectively.

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We have used He(I) photoelectron spectroscopy to measure the percent surface coverage for substances dissolved in hydroxypropionitrile, HO(CH,),CN. The concentration at which 100% surface coverage is achieved, C,,, is an inverse measure of surface activity. Measured values of logI,(Clo,), with C,,