Incoherent quasi-elastic neutron scattering from fructose-water solutions

Melissa Feeney, Craig Brown, Amos Tsai, Dan Neumann, Pablo G. Debenedetti

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Quasi-elastic incoherent neutron scattering (QENS) was used to study the dynamics of 4, 29, and 60 wt % solutions of fructose in deionized water at 300 K. Both the jump-diffusion and stretched exponential models were used to analyze the data, enabling the determination of the structural relaxation rate 1/τ and the stretch exponent β as functions of fructose concentration. The analysis of the neutron scattering data based on the jump-diffusion model is consistent with a transition from continuous to "hopping" or jump diffusion at 29 wt % fructose concentration observed in recent simulations of this same system. The analysis based on the stretched exponential model suggests that this change occurs at a higher fructose concentration.

Original languageEnglish (US)
Pages (from-to)7799-7804
Number of pages6
JournalJournal of Physical Chemistry B
Volume105
Issue number32
DOIs
StatePublished - Aug 16 2001

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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