Predicting subjective spreadability, viscosity, and stickiness

Maria L. Demartine, E. L. Cussler

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

Subjective spreadability, viscosity, and stickiness perceived with the fingers were predicted from fluid mechanics. The correlation coefficients of these predictions were 0.95 for spreadability, 0.95 for viscosity, and 0.90 for stickiness. The two important assumptions in the predictions were that spreadability and viscosity were perceived as shear stress and that stickiness was perceived as time. When the finger geometry was approximated as two parallel plates, the predictions only required rheological data for the Newtonian and non‐Newtonian liquids used. While these liquids covered a range of 106 in apparent viscosity, large variations in other fluid properties such as density and surface tension were not studied.

Original languageEnglish (US)
Pages (from-to)976-982
Number of pages7
JournalJournal of Pharmaceutical Sciences
Volume64
Issue number6
DOIs
StatePublished - Jun 1975
Externally publishedYes

Keywords

  • Liquid texture—predicting subjective spreadability, viscosity, and stickiness
  • Spreadability, subjective—predicted from fluid mechanics, equations
  • Stickiness, subjective—predicted from fluid mechanics, equations
  • Viscosity, subjective—predicted from fluid mechanics, equations

Fingerprint Dive into the research topics of 'Predicting subjective spreadability, viscosity, and stickiness'. Together they form a unique fingerprint.

Cite this