The trends observed in Fig. 4 seem to be in agreement with the
proposed pore inactivation model (Eq. (5)). Initially there is a linear
relation between the water evaporation rate and the amount of oil
absorbed (S / w), as suggested. Subsequently, when the amount of
inactivated pores approaches NT, the right side of Eq. (5) equals 1
and the oil uptake becomes completely dependent on the absolute
amount of water loss: the number of filled pores is constant, but
they still grow in length. Concurrently, the trend becomes a vertical
line, independent of the water evaporation rate.