IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
Characterization and bacterial adhesion of chitosan-perfluorinatedacid films
Autor/es:
KARINA L. BIERBRAUER ; ROXANA V. ALASINO; ADRIÁN MUNOZ; DANTE M. BELTRAMO; MIRIAM C. STRUMIA
Revista:
COLLOIDS AND SURFACES B-BIOINTERFACES
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2014 vol. 114 p. 201 - 208
ISSN:
0927-7765
Resumen:
We reported herein the study and characterization of films obtained by casting of chitosan solutionsin perfluorinated acids, trifluoroacetic (TFA), perfluoropropionic (PFPA), and perfluorooctanoic (PFOA).The films were characterized by FTIR, solid state13C NMR, X-ray, AFM, contact angle, thermogravimetriceffluent analysis by mass spectrometry, and rheology. The results showed a marked influence of chainlength of the perfluorinated acids on the hydrophobic/hydrophilic ratio of the modified chitosan filmswhich was evidenced by the different characteristics observed.The material that showed greater surface stability was chitosan-PFOA. Chitosan film with the additionof PFOA modifier became more hydrophobic, thus water vapor permeability diminished compared tochitosan films alone, this new material also depicted bacterial adhesion which, together with the featuresalready described, proves its potential in applications for bioreactor coating.