Figure 7.

Representative morphologies of aliphatic amine-terminated polystyrene (PS-NH₂)/anhydride-terminated poly(methyl methacrylate) (PMMA-ah) blends after static reaction times of (a) 0, (b) 20, and (c) 60 min at a large domain interface and after static reaction times of (d) 0, (e) 20, and (f) 60 min at a thin sheet interface at 200 °C. All scale bars are 500 nm. Dash lines in (c) approximately indicate the roughening zone. The magnitude of its width is roughly 500 nm. Reprinted with permission from Ref. [66]. Copyright (1999) American Chemical Society.