1. Fiber
and Polymer Technology, KTH Royal Institute of Technology, Teknikringen
56, 100 44 Stockholm, Sweden
2. Dipartimento
di Scienza Applicata e Tecnologia, Politecnico di Torino, Alessandria
Site Viale Teresa Michel 5, 15121, Alessandria, Italy
3. Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, United States
4. Wallenberg
Wood Science Center, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden