1. School of Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 P. R. China
2. Engineering Research Center of Textile Chemicals; Dyeing and Finishing of Shandong University of Technology; Zibo 255049 P. R. China
3. College of Materials Science and Engineering; Hunan University; Changsha Hunan 410082 China