To measure the effect of SA/V ratio, native PP and PP-g-PAA films were cut into 1 1 cm squares (with grafting on both sides, 2 cm2 of surface area for each piece of film)
To measure the effect of SA/V ratio, native PP and PP-g-PAAfilms were cut into 1 1 cm squares (with grafting on both sides,2 cm2 of surface area for each piece of film)