1. Department of Materials Science and Engineering; Clemson University; Clemson South Carolina 29634
2. Chemical Engineering; Universidad de Concepción; Avenida Cordillera 2634-Parque Industrial Coronel Coronel Chile
3. Advanced Structures and Composites Center; University of Maine; Orono Maine 04469
4. School of Forest Resources; University of Maine; Orono Maine 04469
5. Forest Products Laboratory; USDA Forest Service; Madison Wisconsin 53726-2398