1. 3B's Research GroupBiomaterials, Biodegradables and Biomimetics, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal, Department of Polymer Engineering, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal, and Centro de Engenharia Biológica, IBQF, Largo do Paço, Universidade do Minho, P-4710-057 Braga, Portugal