The use of the word "responsible" in the title of this article refers to the use of the word "responsible". The features of the polymer and the permeant component as well as the interaction's temperature all affect permeability. At the interface, the Permeate molecules can be absorbed or desorbed by the sorption process. Many techniques that quantify the permeability of a substance through a particular medium can be used to measure the permeation of a material.
Barrers are also frequently used, however SI units of mol/(msPa) are utilised to quantify permeability owing to diffusion. Diffusion-related permeability should not be confused with permeability (measured in Darcy in earth sciences), which is permeability caused by fluid flow in porous solids.
