I wish to peform a contact angle measurement on a single PCL fiber with diameters ranging from 2 to 10 micrometers.
Is there any publications that have used such methods/instruments?
Thanks
I would use a microscope to visualize a drop on the fibre and Brendan Carroll's beautiful paper, see link, analyzing the drop shape to give you all the parameters that you want.
http://www.sciencedirect.com/science/article/pii/0021979776902277
I suggest using a force tensiometer like a AFM to correctly measure advancing and receding angles. Optical methods are often quite complicated even for non-curved surfaces.
"Single fiber Tensiometry' was not possible since the my fibers would deviate from the liquid rather than going into the liquid in order to measure the force. I am stuck on this problem now.
And since the fibers are around 5 (maybe less) they are difficult to handle!
Despite it is difficult, I also would propose AFM, see publication below for some ideas.
Enhanced Wetting Behavior at Electrospun Polyamide Nanofiber Surfaces
Urszula Stachewicz and Asa H. Barber
DOI: 10.1021/la1046645
I guess you modify the surface of these fibers (How long is such a fiber) and you want to compare the differences. Might it be possible that you choose a different liquid (not water) with a lower tension.
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