ABSTRACT
With potential applications ranging from protective clothing and filtration technology to reinforcement of composite materials and tissue engineering, nanofibers offer remarkable opportunity in the development of multifunctional material systems. The emergence of various applications for nanofibers is stimulated from their outstanding properties such as very small diameters, huge surface area per mass ratio and high porosity along with small pore size. Moreover, the high degree of orientation and flexibility beside superior mechanical properties are extremely important for diverse applications [1-3]. In this study, aligned and molecularly oriented polyacrylonitrile (PAN) nanofibers were prepared using a novel technique comprise two needle with opposite voltage and a rotating drum for applying take-up mechanism. The electrospinning process was optimized for increasing of productivity and improving the mechanical properties through controlling internal structure of the generated fibers.
