1. School of Polymer Science and Engineering The University of Southern Mississippi Hattiesburg MS 39406 USA
2. Department of Chemistry and Biochemistry University of Winsor Ontario N9B3P4 Canada
3. Department of Polymer Science and Engineering School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
4. School of Chemical, Biological, and Environmental Engineering Oregon State University Corvallis OR 97331 USA