Micro-viscosity of liquid oil confined in colloidal fat crystal networks

H. Du, C. Kim, M. G. Corradini, R. D. Ludescher, M. A. Rogers

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Molecular rotors may be utilized as non-invasive, non-disruptive and highly sensitive alternatives to conventional measures of bulk viscosity when the oil is entrained in a colloidal fat crystal network. Oil viscosity changes based on the molecular confinement of the oil, which is dependent on its molecular volume. Changes in micro-viscosity were not dependent on the solids content, but instead were strongly dependent on the box-counting fractal dimension in high-space filling colloidal fat crystal networks (i.e., D > 1.89). A bulk oil viscosity is often an overestimation of the actual viscosity of the entrained oil and may not be appropriate when predicting diffusion in multi-phase materials.

Original languageEnglish (US)
Pages (from-to)8652-8658
Number of pages7
JournalSoft Matter
Volume10
Issue number43
DOIs
StatePublished - Nov 21 2014

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics

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