1. New
Jersey Center for Biomaterials, Rutgers—The State University of New Jersey, 145 Bevier Road, Piscataway, New Jersey 08854, United States
2. Laboratório
de Biomateriais Poliméricos (Poli-Bio), Institute of Chemistry, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçaves, 9500, 91501-970 Porto Alegre, Brazil