Figure 1.
FESEM (a–e) and TEM (f) images of POM/COPA/TPU/CB (65/30/5/6), in which TPU phase were etched by DMF (a–d) and COPA phase are etched by m-cresol (e).
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.