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.
Variation of (a) bead area percentage and (b) fiber diameter of rPET fibers fabricated from various polymer concentrations. Centrifugal spinning condition: rotational speed, 15,000 rpm; needle inner diameter, 160 μm; collection distance, 10 cm.
