PBO fibers are difficult to manufacture due to the dry jet wet spinning
Various types of polymer spinning techniques are known today such as wet spinning
, dry jet-wet spinning, dry spinning, extrusion spinning, direct spinning and gel spinning .
of Poly(ethyleneimine)- (PEI-) CNT Fibers.
CA hollow fiber membranes were spun using a well-known dry-jet wet spinning
process [14, 20].
Current concentration limits were selected due to their wet spinning
Some labs have explored means of growing such fibers whole, but the production rates for these "solid-state" fibers have proven quite slow compared with fiber-production methods that rely on a chemical process called "wet spinning
." In this process, clumps of raw nanotubes are dissolved in a liquid and squirted through tiny holes to form long strands.
TRITON rings are specially designed for the wet spinning
of flax fibres over the full yarn count range.
The microfiber mixtures can be converted into fibers by wet spinning
, gel spinning, melt spinning, melt blowing, or extrusion.
The company's wet spinning
systems have solution pumped through the spinnerettes by spinning pumps directly into the coagulation bath, where solidification occurs.
That research also led to one of Leiss's most notable professional accomplishments: helping Worthington, along with Kelly Hartman, who then was director of research, to commercialize the "wet spinning
" of soy proteins in the mid-to late '60s.