Figure 4.
Concentration of sulfur and oxygen on the PET polymer treated in various SO2 + O2 mixtures. Zero percent of O2 in the mixture refers to pure SO2 plasma, whereas 100% of O2 refers to pure oxygen plasma.
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.