a Fakhrali - Department of Textile Engineering,amirkabir University of Technology, Tehran 15914, Iran.
s.v ebadi - Department of Textile Engineering,amirkabir University of Technology, Tehran 15914, Iran.
a.a Gharehaghaji - Department of Textile Engineering,amirkabir University of Technology, Tehran 15914, Iran.
m Latifi - Department of Textile Engineering, Islamic Azad University, Qaemshahr Branch, Qaemshahr, Iran.

In the present work, PVA/PA6 hybrid nanofiber yarns are produced using two differently charged nozzles method. The twist effect on the E-triangle geometry and mechanical properties of yarns was investigated by changing of the rotational speed of the twister from low to high values. SEM images of nanofiber yarns showed that by increasing the twist, the diameter of yarns were decreased. The mechanical tests result revealed that increasing of the twist rate to 11000 TPM, was led to improvement in the tensile strength and elongation at break of nanofiber yarns. Also, height and width of the E-triangle in the higher twist values were decreased

Nanofiber yarns, Mechanical properties, Electrospinning, high twist, Nylon 6