Capillary rise of water in hydrophilic nanopores

Details Capillary rise of water in hydrophilic nanopores Capillary rise of water in hydrophilic nanopores

2009-06-25

arxiv.org/abs/0906.4614v1

Physical Review E 79, 067301 (2009)

Physics

Fluid Dynamics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevE.79.067301

We report on the capillary rise of water in three-dimensional networks of hydrophilic silica pores with 3.5nm and 5nm mean radii, respectively (porous Vycor monoliths). We find classical square root of time Lucas-Washburn laws for the imbibition dynamics over the entire capillary rise times of up to 16h investigated. Provided we assume two preadsorbed strongly bound layers of water molecules resting at the silica walls, which corresponds to a negative velocity slip length of -0.5nm for water flow in silica nanopores, we can describe the filling process by a retained fluidity and capillarity of water in the pore center. This anticipated partitioning in two dynamic components reflects the structural-thermodynamic partitioning in strongly silica bound water layers and capillary condensed water in the pore center which is documented by sorption isotherm measurements.

Affiliated with

Also associated with

No associations

Rating

Capillary rise of water in hydrophilic nanopores does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Capillary rise of water in hydrophilic nanopores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capillary rise of water in hydrophilic nanopores will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-536775