Multi-lamellar vesicle formation in a long-chain nonionic surfactant: C16E4/D2O system

Research output: Contribution to journalArticle

Abstract

The temperature dependent theological and structural behavior of a long-chain C16E4 (tetraethylene glycol monohexadecyl ether) surfactant in D2O has been studied within the regime of low shear range. In the absence of shear flow, the system forms a lamellar liquid crystalline phase at relatively high temperatures. The present paper reports on the shear-induced multi-lamellar vesicle (MLV) formation in C16E4/D2O at 40 wt.% of surfactant in the temperature range of 40-55 degrees C. The transition from planar lamellar structure to multi-lamellar vesicles has been investigated by time-resolved experiments combining rheology and nuclear magnetic resonance (rheo-NMR), rheo small-angle neutron scattering (rheo-SANS) and rheometry. The typical transient viscosity behavior of MLV formation has been discovered at low shear rate value of 0.5 s(-1). (C) 2011 Elsevier Inc. All rights reserved.

Details

Authors
  • Luigi Gentile
  • Kell Mortensen
  • Cesare Oliviero Rossi
  • Ulf Olsson
  • Giuseppe A. Ranieri
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Chemistry

Keywords

  • CnEm, Rheology, Rheo-SANS, Rheo-NMR, MLV formation
Original languageEnglish
Pages (from-to)1-4
JournalJournal of Colloid and Interface Science
Volume362
Issue number1
Publication statusPublished - 2011
Publication categoryResearch
Peer-reviewedYes