Self-assembly study of polydisperse ethylene oxide-based nonionic surfactants

Miklós Nagy, László Szöllösi, Sándor Kéki, Miklós Zsuga

Research output: Article

5 Citations (Scopus)

Abstract

The self-assembly behavior of polyethoxylate-based multicomponent nonionic surfactants was studied. Using the dynamic light scattering method, thermodynamical parameters such as the critical micelle concentration (cmc) and hydrophile-lipophile balance (HLB), as well as the micelle size and micelle size distribution, were determined. The number average molecular weight and number average HLB of the samples were determined by MALDI-TOF-MS and 'H NMR techniques, and the data were evaluated. A connection was found between the HLB and the In(cmc) value of the samples which can be described by a simple equation. Using this equation and plotting In(cmc) versus the average number of ethylene oxide units, lines were obtained at different temperatures, and their slope allowed the calculation of the contribution of a single ethylene oxide unit to the Gibbs free energy of micellization.

Original languageEnglish
Pages (from-to)1014-1017
Number of pages4
JournalLangmuir
Volume23
Issue number3
DOIs
Publication statusPublished - jan. 30 2007

    Fingerprint

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this