What is it about?
A cotton fabric was used as a model to study water evaporation in porous media. The experimental technique is based on the Dynamic Vapor Sorption. The effects of salts and surfactants on evaporation were investigated.
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Why is it important?
Two stage in the evaporation process from porous media has been highlighted: a constant drying rate phase (CDP) followed by a falling drying rate phase (FDP). Salts and surfactants influence only one of the evaporation phases (CDP). This effect could be due to an increase of surface area.
Perspectives
This article shows how an everyday task as evaporation in porous media can be investigated and improoved by using some additives. The Dynamic Vapor Sorption turned out to be an appropriate technique to characterize the evaporation process.
Dario Donnarumma
Laboratoire Charles Coulomb
Read the Original
This page is a summary of: Water evaporation from porous media by Dynamic Vapor Sorption, Colloids and Surfaces A Physicochemical and Engineering Aspects, September 2015, Elsevier,
DOI: 10.1016/j.colsurfa.2014.11.011.
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