Functionalization of Natural Cork Composite with Microcapsules after Plasma Treatment

Table 2

Surface energy and work of adhesion (distilled water) in the cork samples with and without plasma treatment.

	𝜃water (°)	𝜃PEG (°)	𝜃glycerol (°)	𝛾 mJ·m^−2	𝛾^D mJ·m^−2	𝛾^P mJ·m^−2	𝑊adh
Untreated	125.5	100.2	137.2	10.9	7.4	3.5	30.52
600 W·min·m^−2	92.5	70.6	132.9	17.1	4.4	12.7	69.62
2400 W·min·m^−2	53.9	70.8	116.0	26.9	2.5	24.4	115.69
4800 W·min·m^−2	26.9	65.4	117.2	35.5	10.0	25.5	137.72