Figure 1.
Synthesis of hydrogels in (a) free radical polymerization, (b) physical cross-linking, (c) irradiation cross-linking, and (d) chemical cross-linking.
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.