Rheo-NMR of wormlike micelles formed from nonionic pluronic surfactants

Bradley S. Douglass, Ralph H. Colby, Louis A. Madsen, Paul T. Callaghan

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Using a range of techniques combining rheology and magnetic resonance, we here investigate the flow and alignment properties of wormlike micelles formed by a 5% w/w solution of the BASF difunctional block copolymer nonionic surfactant, Pluronic P105 in water along with 4.3% w/v l-phenylethanol-d 5. A variety of shear-banding and alignment behaviors are observed, along with both stable and fluctuating flows. These strongly depend upon both temperature and applied shear rate. The deuterium-labelled alcohol enables study of alignment from quadrupole splitting, using a Hankel transform in the cylindrical geometry of our rheo-NMR cell.

Original languageEnglish (US)
Pages (from-to)804-814
Number of pages11
JournalMacromolecules
Volume41
Issue number3
DOIs
StatePublished - Feb 12 2008

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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