Figure 7.
FESEM cross-sectional images of membranes (a) 16 wt % PC/NMP and (b) 18 wt % PC/NMP, the traces of residual solvent are shown by the circled area.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.