Determination of the Adhesion Between Electrospun Mats through Peel tests

Electrospinning is an interesting technique widely used in industry to produce complex fibrous structures with tunable porosity and morphology. Yet, little is known about possible delamination between electrospun layers. In the present work, we studied the adhesion between PCL electrospun mats of similar porosity and investigated the effect of different morphologies, solvents and post-treatment on adhesive strength using a T-peel test. The objective is to establish guiding rules for improving the adhesive strength when fabricating multilayered electrospun systems. The effect of fiber diameter was found to be clearly dominant, large diameter fibers (3.6 µm) showing almost 7-fold increase (p