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- W2074745916 abstract "Abstract Doped polypyrrole coatings of varying degrees of wetting characteristics were prepared by a one-step anodic polymerization process and subsequently subjected to external applied potentials in an aqueous sodium benzenedodecylsulfonate solution. When an applied potential was increased from −0.9 to +0.9 at steps of 300 mV for 300 s at each step, static contact angles gradually increased from 64° to 122°. The surface morphology of as-deposited polypyrrole was observed to transform from being nodular to an increasingly rough surface composed of microscale islands with nanoscale roughness, forming a micro/nanoscale hierarchical structure. The average roughness of these microscale islands were measured to be 2.3 nm at −0.8 V, which increased to 14.6 nm at +0.8 V, compared to the average roughness of doped polypyrrole at 4.8 nm. These microscale islands were oblong in shape, and their sizes increased as the applied potential increased. Changes in the average roughness resulted in a change in the surface wettability of polypyrrole—as-deposited polypyrrole showed a static contact angle of 90°, however, it lowered to 70° at −0.8 V and irreversibly increased to 115° at +0.8 V." @default.
- W2074745916 created "2016-06-24" @default.
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- W2074745916 date "2009-10-01" @default.
- W2074745916 modified "2023-10-16" @default.
- W2074745916 title "Influence of redox-induced restructuring of polypyrrole on its surface morphology and wettability" @default.
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- W2074745916 doi "https://doi.org/10.1016/j.sna.2009.07.006" @default.
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