Figure 2
From: Well-ordered polymer nano-fibers with self-cleaning property by disturbing crystallization process
XPS spectra for the pure PTFE and PTFE/PPS coatings. XPS survey spectra (a) and XPS C1s core-level spectra (b) of the surfaces of pure PTFE coating (P1 coating) and PTFE/PPS superhydrophobic coating (P2 coating).