Effects of Polymeric Additives on the Crystallization and Release Behavior of Amorphous Ibuprofen

Figure 1

Chemical structures of (a) ibuprofen (IBU), (b) poly(acrylic acid) (PAA), (c) poly(N-vinyl pyrrolidone) (PVP), and (d) poly(4-vinyl phenol) (PVPh).

(a)

(b)

(c)

(d)