1 [Graphical Abstract] Polyurethanes containing a crystalline polyol and semiflexible urethane segments Borja Fernández-d’Arlas 1 , Raquel Fernández 1 , James Runt 2 , Arantxa Eceiza 1* 1 Grupo “Materiales+Tecnologías” (GMT), Departamento de Ingeniería Química y del Medio Ambiente. Universidad del Pais Vasco (UPV/EHU), Pza. Europa 1, 20018 Donostia-San Sebastián, Spain 2 Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States