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Contact angle as a function of surface topology (middle column images (B, E, H) are outer surfaces and right-hand column images (C, F, I) are back surfaces) for a PAM synthesized using type I synthesis conditions. (A–C) Sample 1; (D–F) sample 5 and (G–I) sample 4. (A, D, G) SEM images of outer and back (inset) surfaces of these samples.
