A technique for spinning continuous filaments constructed of nano-scale fibers instead of
non-woven obtained by general electrospinning was described in the paper. Polyamide 6/66 copolymer
solution in 88% formic acid was used as the spinning material. The relationships between the fiber
microstructures, filament mechanical properties and spinning parameters: spinneret tip to collector
vertical distance (TD), rotation speed (RS) were investigated. Post-drawing was performed to the
as-electrospun continuous filament. The research results revealed that increase of TD and RS could
improve the fiber's uniaxial alignment and crystal structure, consequently the strength of the filament
was enhanced. After being post-drawn, the stress and strain at break of the electrospun polyamide 6/66
copolymer filament was well improved.
