Rigid and semi rigid polyurethane resins: a structural investigation using DMA, SAXS and Le Bail method - Trovati, Graziella; Sanches, Edgar A.; Souza, Sérgio M.; Santos, Amanda L.; Claro Neto, Salvador; Mascarenhas, Yvonne Primerano; Chierice, Gilberto Orivaldo (Journal of Molecular Structure, 2014)