Skip to Main content Skip to Navigation
Journal articles

Tuning the Receding Contact Angle on Hydrogels by Addition of Particles

Abstract : Control of the swelling, chemical functionalization, and adhesivity of hydrogels are finding new applications in a wide range of material systems. We investigate experimentally the effect of adsorbed particles on hydrogels on the depinning of contact lines. In our experiments, a water drop containing polystyrene microspheres is deposited on a swelling hydrogel, which leads to the drop absorption and particle deposition. Two regimes are observed: a decreasing drop height with a pinned contact line followed by a receding contact line. We show that increasing the particles concentration increases the duration of the first regime and significantly decreases the total absorption time. The adsorbed particles increase the pinning force at the contact line. Finally, we develop a method to measure the receding contact angle with the consideration of the hydrogel swelling.
Complete list of metadata

Cited literature [40 references]  Display  Hide  Download
Contributor : François Boulogne Connect in order to contact the contributor
Submitted on : Monday, November 6, 2017 - 8:58:50 AM
Last modification on : Tuesday, October 19, 2021 - 11:33:05 AM
Long-term archiving on: : Wednesday, February 7, 2018 - 1:15:09 PM


Files produced by the author(s)




François Boulogne, François Ingremeau, Laurent Limat, Howard A. Stone. Tuning the Receding Contact Angle on Hydrogels by Addition of Particles. Langmuir, American Chemical Society, 2016, 32 (22), pp.5573-5579. ⟨10.1021/acs.langmuir.6b01209⟩. ⟨hal-01629084⟩



Record views


Files downloads