InterPore2022

Inkjet printing of surfactant solutions onto thin moving porous media

30 May 2022, 16:20

15m

Oral Presentation (MS16) Fluid Interactions with Thin Porous Media MS16

Speaker

Anton Darhuber (Eindhoven University of Technology)

Description

We have studied the combined imbibition and evaporation of surfactant solutions into thin porous media by means of experiments and numerical simulations. Solutions of anionic and non-ionic surfactants were deposited onto moving sheets of paper by a droplet-on-demand inkjet system. Optical transmission imaging and infrared thermography were used to monitor their lateral transport and evaporation. Moreover, we propose a theoretical model based on a dual-porosity approach that accounts for moisture and surfactant transport in both the pores and the fibers of the paper sheets as well as for surfactant adsorption. The numerical simulations reproduce the experimental data qualitatively well.

References

Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume 634, 5 February 2022, 127832
https://doi.org/10.1016/j.colsurfa.2021.127832

Presentation materials

Darhuber_Interpore2022_surfactants.pdf