English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

In 1966 Pelofsky proposed an empirical linear correlation between the naturallogarithm of the surface tension and the reciprocal viscosity, which seems towork adequately for a wide range of fluids. In particular, it has been shownthat it is useful in the case of n-alkanes and their binary and ternarymixtures. More recently however, it has been found not to work for severalionic liquids unless the reciprocal viscosity is raised to a power. Theexponent of this power was fixed to be 0.3, at least for the studied ionicfluids. In the present work, the performance and accuracy of both the originalPelofsky correlation and the modified expression including the exponent arestudied for 56 non-ionic fluids of different kinds over a broad range oftemperatures. Also, the temperature range is delimited for which eachexpression reproduces the surface tension values with average absolutedeviations below 1%. The needed coefficients are given for both the broad andthe delimited temperature range for each expression. Unfortunately, the resultsshow that the value of the exponent in the modified Pelofsky expression issubstance-dependent for the normal fluids studied.

Empirical correlation of the surface tension versus the viscosity for saturated normal liquids