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AFM images (a, b, and c for PVAc–Cu1, PVAc–Cu5, and PVAc–Cu10, respectively), SEM images (d, e, and f for PVAc–Cu1, PVAc–Cu5, and PVAc–Cu10, respectively) and static water contact angles on the surfaces of coatings (g, h, and i for PVAc–Cu1, PVAc–Cu5, and PVAc–Cu10, respectively).
