Low-surface energy surfactants with branched hydrocarbon architectures

Shirin Alexander*, Gregory N. Smith, Craig James, Sarah E. Rogers, Frédéric Guittard, Masanobu Sagisaka, Julian Eastoe

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

43 Citations (Scopus)
414 Downloads (Pure)

Abstract

Surface tensiometry and small-Angle neutron scattering have been used to characterize a new class of low-surface energy surfactants (LSESs), "hedgehog" surfactants. These surfactants are based on highly branched hydrocarbon (HC) chains as replacements for environmentally hazardous fluorocarbon surfactants and polymers. Tensiometric analyses indicate that a subtle structural modification in the tails and headgroup results in significant effects on limiting surface tensions γcmc at the critical micelle concentration: a higher level of branching and an increased counterion size promote an effective reduction of surface tension to low values for HC surfactants (γcmc ∼ 24 mN m-1). These LSESs present a new class of potentially very important materials, which form lamellar aggregates in aqueous solutions independent of dilution.

Original languageEnglish
Pages (from-to)3413-3421
Number of pages9
JournalLangmuir
Volume30
Issue number12
Early online date11 Mar 2014
DOIs
Publication statusPublished - 1 Apr 2014

Keywords

  • SODIUM DODECYL-SULFATE
  • CRITICAL MICELLE CONCENTRATIONS
  • LYOTROPIC LAMELLAR PHASES
  • LOW FLUORINE CONTENT
  • ANIONIC SURFACTANTS
  • IONIC SURFACTANTS
  • AEROSOL-OT
  • CO2-PHILIC SURFACTANTS
  • AIR/WATER INTERFACE
  • N-ALKANES

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