Production and characterization of polyurethane castor oil (Ricinus communis) foam for nautical fender - Trovati, Graziella; Suman, Marcos Vinicius Natali; Sanches, Edgard Aparecido; Campelo, Pedro Henrique; Bessan Neto, Romeu; Claro Neto, Salvador; Trovati, Luiz Roberto (Polymer Testing, 2019)