title: Characterization and bacterial adhesion of chitosan-perfluorinated acid films.
abstract: We reported herein the study and characterization of films obtained by casting of chitosan solutions in perfluorinated acids, trifluoroacetic (TFA), perfluoropropionic (PFPA), and perfluorooctanoic (PFOA). The films were characterized by FTIR, solid state (13)C NMR, X-ray, AFM, contact angle, thermogravimetric effluent analysis by mass spectrometry, and rheology. The results showed a marked influence of chain length of the perfluorinated acids on the hydrophobic/hydrophilic ratio of the modified chitosan films which was evidenced by the different characteristics observed. The material that showed greater surface stability was chitosan-PFOA. Chitosan film with the addition of PFOA modifier became more hydrophobic, thus water vapor permeability diminished compared to chitosan films alone, this new material also depicted bacterial adhesion which, together with the features already described, proves its potential in applications for bioreactor coating.
authors.affiliation: Centro de Excelencia en Productos y Procesos de Córdoba, Gobierno de la Provincia de Córdoba, Pabellón CEPROCOR, CP 5164, Santa María de Punilla, Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Argentina.
authors.forename: Karina L
authors.initials: KL
authors.lastname: Bierbrauer
authors.affiliation: Centro de Excelencia en Productos y Procesos de Córdoba, Gobierno de la Provincia de Córdoba, Pabellón CEPROCOR, CP 5164, Santa María de Punilla, Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Argentina.
authors.forename: Roxana V
authors.initials: RV
authors.lastname: Alasino
authors.affiliation: Centro de Excelencia en Productos y Procesos de Córdoba, Gobierno de la Provincia de Córdoba, Pabellón CEPROCOR, CP 5164, Santa María de Punilla, Córdoba, Argentina.
authors.forename: Adrián
authors.initials: A
authors.lastname: Muñoz
authors.affiliation: Centro de Excelencia en Productos y Procesos de Córdoba, Gobierno de la Provincia de Córdoba, Pabellón CEPROCOR, CP 5164, Santa María de Punilla, Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Argentina.
authors.forename: Dante M
authors.initials: DM
authors.lastname: Beltramo
authors.affiliation: Departamento de Química Orgánica, IMBIV, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, CP 5000, Córdoba, Argentina. Electronic address: mcs@fcq.unc.edu.ar.
authors.forename: Miriam C
authors.initials: MC
authors.lastname: Strumia
mesh_terms: D000143:Acids / Q000494:pharmacology*; D001422:Bacterial Adhesion / Q000187:drug effects*; D002210:Caprylates / Q000494:pharmacology; D045744:Cell Line, Tumor; D048271:Chitosan / Q000494:pharmacology*; D015169:Colony Count, Microbial; D055119:Elastic Modulus / Q000187:drug effects; D005466:Fluorocarbons / Q000494:pharmacology*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D050296:Microbial Viability / Q000187:drug effects; D018625:Microscopy, Atomic Force; D008970:Molecular Weight; D011550:Pseudomonas aeruginosa / Q000187:drug effects / Q000254:growth & development / Q000502:physiology*; D012212:Rheology / Q000187:drug effects; D013816:Thermodynamics; D013818:Thermogravimetry; D014269:Trifluoroacetic Acid / Q000494:pharmacology; D014961:X-Ray Diffraction
chemical_list: D000143:Acids; D002210:Caprylates; D005466:Fluorocarbons; C033093:perfluoropropionic acid; D048271:Chitosan; C023036:perfluorooctanoic acid; D014269:Trifluoroacetic Acid
keywords: Chitosan; Microbiological activity; Perfluorinated acids; Rheology; Thermal degradation