Fig. 2: Fabrication and characterization of SHPFs.
From: Scalable super hygroscopic polymer films for sustainable moisture harvesting in arid environments
a Fabrication of an SHPF via a casting method. b Photograph of a wafer-scale SHPF. Scale bar: 2 cm. c Photographs of SHPFs with different shapes and thicknesses. Scale bars: 1 cm. d SEM image of SHPF. Scale bar: 200 µm. The Inset shows the enlarged porous structure of SHPH. Scale bar: 20 µm. e Cross-sectional view of SHPF showing an average thickness of ~100 µm. Scale bar: 200 µm. f FTIR spectra of KGM (black curve), HPC (blue curve), and SHPF (red curve). g The XRD patterns of KGM (black curve), HPC (red curve), KGM + HPC (blue curve), and SHPF (magenta curve). Panel a was partly generated using Servier Medical Art, provided by Servier, licensed under a Creative Commons Attribution 3.0 unported license.
