Relation of capillary height to contact angle !!
Relation of capillary height to contact angle !!
(OP)
I am trying to measure the pore size radius of the polyethylene wick using ethanol as the working fluid. In the method i am trying to determine the maximum capillary height that can be achieved by fluid, from which i can measure the pore radius. Unfortunately i don't know the contact angle for the ethanol with polythylene. Could someone tell wheather the contact angle effect the capillary height or it just effect the time require to achieve the head.
Any ideas relating to the subject question are welcome!! Cheers
Any ideas relating to the subject question are welcome!! Cheers





RE: Relation of capillary height to contact angle !!
RE: Relation of capillary height to contact angle !!
<nbucska@pcperipherals.com>
RE: Relation of capillary height to contact angle !!
Varying the contact angle definitely affects the distance travelled by the ethanol but does not affect the perpendicular height. The only thing you need to take into account is that in this case, use the perpendicular height as the actual height not the distance travelled by ethanol.
To cut the long story short, why not just drop the wick perpendicularly.
RE: Relation of capillary height to contact angle !!