2.4 Oxygen Permeability [6], [7]
The oxygen permeability (Dk) of the hydrogel sheet was obtained using a 210T Permiometer and the equation :
Dk = i (PA) x L (mm) x (6 x 10-11) (2)
where
L = hydrogel sample thickness (mm)
i = constant current obtained for O2 passing through the hydrogel