HDPE fibers were heat drawn through heated glycerol at 83 [+ or -] 2[degrees]C to a ratio of 18X.
Table 1 - properties of as-spun
and drawn copolyetherester-EPDM TPV fiber
Table 2 also shows the effect of drawing on the as-spun
treated and untreated yarns.
Metrics used include the calculated as-spun
fiber circularity, fiber surface roughness using scanning electron microscopy (SEM), structure of as-spun
and drawn fibers by wide angle X-ray diffraction (WAXD), and tensile properties of drawn precursor fibers.
The fiber formation of polyamic acid precursor does involve chemical reactions: a cyclization reaction in the as-spun
fibers takes place along the spinning path at high temperature.
It has been reported that porous nylon-6 fibers can be obtained by salt-induced electrospinning method, followed by selective dissolution of the salt in the as-spun
To quantify the amount of solvent removed from the as-spun
gel-filaments, a number of gel-fibers with a length of 0.
Although the best coagulation conditions are necessary for fiber formation, the shrinkage and profile of as-spun
fibers are also strongly affected by the polymer concentration in spinning dope , Consequently, the stretch ability and density of PAN fiber could be influence by the spinning dope.
The aim of our study was to investigate polymorphic transformations of isotactic polypropylene with the use of horizontal isothermal bath (hIB) [16-18] in the melt spinning of ultra-high performance as-spun
and drawn filaments.
95 for the as-spun
and drawn fibers (draw ratio = 4.
After phase separation, the as-spun
hollow fiber membranes were rolled to a take-up machine and then put them into ethanol (95 vol%).
random oriented fibers were collected in grounded collecting plate.