M GORJI - Department of Textile Engineering, Engineering faculty, Science and Research Branch, Islamic Azad University, Tehran, Iran
ALI.A.A JEDDI - Textile Eng. Dept., Amirkabir Uni. of Technology, Tehran, Iran
A.A Gharehaghaji - Textile Eng. Dept., Amirkabir Uni. of Technology, Tehran, Iran
M Haghpanahi - Iran University of Science & Technology, Tehran, IRAN

Electrospun nano mats due to their high surface area and interconnected porosity are the important area in nanotechnology applications[1]. In this study the effect ofsome production parameters (electrospinning duration, polymer concentration and solvent mixture) on stress-strain behaviour of poly urethane nanofiber web is investigated. The results show that with increasing the coating time the thickness and weight of mats and subsequently their tensile strength increase linearly