1. Forest Products Laboratory, U.S. Forest Service, 1 Gifford Pinchot Drive, Madison, Wisconsin 53726, United States
2. Advanced
Structures and Composites Center, University of Maine, 35 Flagstaff Road, Orono, Maine 04469, United States
3. School
of Forest Resources, University of Maine, 5755 Nutting Hall, Orono, Maine 04469, United States
4. Department
of Chemical and Biological Engineering, University of Maine, 5737 Jenness Hall, Orono, Maine 04469, United States