1. Department of Materials and Textile Engineering, Faculty of Engineering; Razi University; Kermanshah Iran
2. Department of Textile Engineering; Isfahan University of Technology; Isfahan 84156-83111 Iran
3. Fiber and Polymer Science, College of Textiles; North Carolina State University; Raleigh North Carolina 27695-8301
4. Department of Mechanical Engineering, Faculty of Engineering; Center for Nanofibers and Nanotechnology, National University of Singapore; Singapore 117576 Singapore
5. Department of Chemical Engineering; Isfahan University of Technology; Isfahan 84156-83111 Iran