1. ISM, UMR 5255, University of Bordeaux, Talence 33405 Cedex, France
2. Facultad de Quimica, Universidad del Pais Vasco, Apdo 1072, 20080 San Sebastian, Spain
3. Key Laboratory of Leather Chemistry and Engineering of
Ministry of Education, Sichuan University, Chengdu 610065, P. R. China
4. CICbiomaGUNE Unidad Biosupeficies, Paseo Miramon 182 Edif C, 20009 San Sebastian, Spain