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(A) Water contact angles of the aluminum substrate and AZ-100, AZ-95, AZ-90, and AZ-50 coatings. Insets show schematic models at the molecular level of pure polyaleuritate (AZ-100) and zinc-containing samples. Main chemical species are indicated. (B) Comparison of WCA values of AZ coatings to those of common petroleum-based plastics. (C) E. coli growth on AZ coatings at three different starting bacteria concentrations as an indicator of antimicrobial activity.
