Cover Image, Volume 52, Issue 10



Vinyl acetate groups arrange themselves to preferentially adsorb on a fumed silica surface over ethylene groups in poly(ethylene-stat-vinyl acetate) copolymers. Temperature-modulated differential scanning calorimetry and FTIR are used by Madhubhashini Maddumaarachchi and Frank D. Blum on page 727 (DOI: 10.1002/polb.23476) to show how glass transitions, melting, and hydrogen bonding vary with the composition and the adsorbed amount of the copolymer. The cover shows the preference of the vinyl acetate carbonyls (red) hydrogen bonded to the surface. When compared as a function of vinyl acetate groups alone, all copolymers and the homo-poly(vinyl acetate) behave similarly, except at low vinyl acetate contents, which can be considered carbonyl-starved