Polyacrylonitrile nanofibre yarn; electrospinning and their post-drawing behaviour

Polyacrylontrile nanofibre yarns have been successfully produced from an electrospinning setup composing positively and negatively charged spinnerets, a rotating funnel and a yarn winder. Through hot drawing, yarns show compact morphology and improved uniformity and have a significant decrease in both yarn and fibre diameters. The hot drawing has improved the molecular orientation and crystallinity of the fibres. The yarn drawn to 5 times of its original length has been found to have the highest tensile strength and modulus.