Antimicrobial Polyethylene through Melt Compounding with Quaternary Ammonium Salts

Figure 3

Contact angle of the quat-modified PE samples as a function of N-content in the quat molecule. (a) Freshly extruded samples. The black and red solid lines are the linear regression of the data sets with 5% quat and 3% quat, respectively, and are only meant to guide the eye. (b) Samples that were leached in water for one month. The solid lines are linear regressions of the corresponding data sets. The dashed line in panel (b) (after leaching) corresponds to the solid black line in panel (a) (before leaching).

(a)

(b)