What membrane has been used to prevent water vapor from passing, but would allow regular air to pass
Thursday, September 04, 2014 09:32:30
flow of water vapors (hydrophilic) while allowing regular air molecules (such as oxygen) to pass.
For the PTFE membrane the water intrusion pressure (which is inversely related to pore size) isgreatest with the smaller sizes:
Water Intrusion of PTFE
Pore Size (um) Water Intrusion Pressure (psi)