SURFACE PROPERTIES OF LONG CHAIN ALKYL MONOAZA CROWN ETHERS.

Ping Ling Kuo, Isao Ikeda, Mitsuo Okahara

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

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 languageEnglish
Pages (from-to)4-6
Number of pages3
JournalTenside Detergents
Volume19
Issue number1
Publication statusPublished - 1982 Jan 1

All Science Journal Classification (ASJC) codes

  • Medicine(all)

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