Superhydrophobic Polyimide via Ultraviolet Photooxidation: The Evolution of Surface Morphology and Hydrophobicity under Different Ultraviolet Intensities

Figure 5

SEM image and corresponding EDS mappings of O (b) and C (c) of UV-treated PI (10 mW/cm², 72 h). The images were taken at the same position of the sample at the same scale.

(a)

(b)

(c)