1. Macromolecular Science and Engineering Program University of Michigan 2800 Plymouth Road Ann Arbor MI 48109‐2800 USA
2. Department of Forestry Michigan State University 480 Wilson Rd East Lansing MI 48824 USA
3. Department of Materials Science University of Michigan 2800 Plymouth Road Ann Arbor MI 48109‐2800 USA
4. Chemical Engineering and Materials Science Michigan State University 480 Wilson Rd East Lansing MI 48824 USA