1. Department of Composite Materials; Leibniz-Institut für Polymerforschung Dresden e.V; Dresden 01069 Germany
2. PGMAT, Caxias do Sul University; Caxias do Sul, RS 95070-560 Brazil
3. Nuclear and Energetic Research Institute - IPEN/CNEN; São Paulo, SP 05598-900 Brazil
4. PPGE3M, Federal University of Rio Grande do Sul; Porto Alegre, RS 91501-970 Brazil