Surface active properties of simple cyclic and heterocyclic amines in water.
The surface tension of aqueous solutions of simple cyclic, heterocyclic and aromatic amines was measured with a Du Nöuy tensiometer at 25 degrees C and the results discussed in terms of structure-aggregation relationships. The simple compounds used in this study were piperazine, piperidine, morpholine, 3-methylpyridine, cyclohexylamine and benzylamine, with carbon numbers ranging from four to seven. Piperazine, piperidine and morpholine did not form micellar associations but cyclohexylamine, benzylamine and 3-methylpyridine did, indicating that more than six carbons are necessary to form micellar associations, at least for compounds having a six-membered ring.
Fujino
Y
Y
Kyoritsu College of Pharmacy, Tokyo, Japan.
Yokoyama
S
S
D000588:Amines / Q000737:chemistry*; D006571:Heterocyclic Compounds / Q000737:chemistry*; D013329:Structure-Activity Relationship; D013500:Surface Tension; D013501:Surface-Active Agents / Q000737:chemistry*; D014867:Water
D000588:Amines; D006571:Heterocyclic Compounds; D013501:Surface-Active Agents; D014867:Water