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.
Rheological properties of S-PU and H-PU: (a) Storage moduli (G′, filled symbols) and loss moduli (G″, open symbols) versus angular frequency of S-PU (red) and H-PU (black) at 180 °C; (b) G′ and G″ versus angular frequency of S-PU at 180 °C, 190 °C, 200 °C and 210 °C.
