Symmetric di- or tetra-alkyl substituted monodisperse polyoxyethyleneglycols: Synthesis and surface properties

Hubert Wassermann, Elmostafa Azim, Gérard Coudert, Samuel Achilefu, Claude Selve

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

A new series of amphiphilic compounds are presented. The dialkylated monodisperse polyoxyethylene derivatives were prepared by a three-step reaction and global yields >60% were obtained. For the synthesis of the tetraalkylated derivatives, six reaction steps were required and yields >40% were obtained. The evaluation of their surface properties was effected by measuring the variation of the surface tension (γ) of the aqueous solutions as a function of their concentration. The results reveal that they are surface-active agents. They lowered the surface tension of water to the range usually observed for classical hydrogenated non-ionic surfactants. The observed stabilization of γ for a range of concentrations corresponds to the formation of organized phases. The Critical Concentrations obtained are higher than those for analogous linear compounds having the same hydrophilic-lipophilic balance. The areas per polar head group of surfactant molecules are relatively constant for compounds of equivalent hydrophobicity.

Original languageEnglish
Pages (from-to)2043-2047
Number of pages5
JournalJournal of the Chemical Society, Perkin Transactions 2
Issue number11
StatePublished - Dec 1 1992
Externally publishedYes

Fingerprint Dive into the research topics of 'Symmetric di- or tetra-alkyl substituted monodisperse polyoxyethyleneglycols: Synthesis and surface properties'. Together they form a unique fingerprint.

  • Cite this