1Department of Polymer Engineering, Sahand University of Technology, Tabriz, P.O. Box 51335-1996, Iran
2Institute of Polymeric Materials, Sahand University of Technology, Tabriz, P.O. Box 51335-1996, Iran
3Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, P.O. Box 15875-4413, Iran