Cover: Amine end‐functional poly(styrene‐co‐acrylonitrile) (SAN) copolymers are synthesized using nitroxide mediated polymerization for use in reactive extrusion with maleic anhydride grafted poly(ethylene) (PE). Such SAN copolymers are envisioned as alternative barrier polymers with controlled microstructure for PE matrices. Further details can be found in the article by K. J. Oxby and M. Marić on page 160.