1. Macromolecular Chemistry; Bavarian Polymer Institute; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
2. College of Materials Science and Engineering; Nanjing Forest University; Nanjing 210037 China
3. Polymer Engineering; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
4. Department of Mechanical and Industrial Engineering; University of Illinois at Chicago; 842 W. Taylor Street Chicago IL 60607 USA