Abstract
In the reported experiments, surface properties of long chain N-alkyl monoaza crown ethers, i. e. , monoaza 15, 18, and 21 crowns substituted by C//8-C//1//2 alkyl groups (I) were investigated and compared with those of corresponding open chain compounds, i. e. , homogeneous polyoxyethylenated alkylamines (II). Monoaza crown ethers (I) are characteristically differentiated from the open chain alkylamines (II) in the points of smaller values of cloud point, c. m. c. , and gamma cmc, but larger values of adsorption area and free energy change of adsorption ( DELTA G). In the range of investigated alkyl chain length, the wetting and foaming properties of I are found to be better than those of II. From the views clarified above, I is characterized as a new useful surface active compound.
Original language | English |
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Pages (from-to) | 4-6 |
Number of pages | 3 |
Journal | Tenside Detergents |
Volume | 19 |
Issue number | 1 |
Publication status | Published - 1982 Jan 1 |
All Science Journal Classification (ASJC) codes
- Medicine(all)