Characterization and bacterial adhesion of chitosan-perfluorinated acid films

•Chitosan films properties are affected by the addition of perfluorinated acids.•Chitosan degradation temperature diminishes with the fluorinated chain length.•Chitosan amorphous character increases with the fluorinated chain length.•Chitosan-PFOA affects lipid bilayers in various cell lines.•Chitos...

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Bibliographic Details
Published in:Colloids and surfaces, B, Biointerfaces B, Biointerfaces, 2014-02, Vol.114, p.201-208
Main Authors: Bierbrauer, Karina L., Alasino, Roxana V., Muñoz, Adrián, Beltramo, Dante M., Strumia, Miriam C.
Format: Article
Language:English
Subjects:
Acids - pharmacology
Bacterial Adhesion - drug effects
Caprylates - pharmacology
Cell Line, Tumor
Chitosan
Chitosan - pharmacology
Colony Count, Microbial
Elastic Modulus - drug effects
Fluorocarbons - pharmacology
Humans
Magnetic Resonance Spectroscopy
Microbial Viability - drug effects
Microbiological activity
Microscopy, Atomic Force
Molecular Weight
Perfluorinated acids
Pseudomonas aeruginosa - drug effects
Pseudomonas aeruginosa - growth & development
Pseudomonas aeruginosa - physiology
Rheology
Rheology - drug effects
Thermal degradation
Thermodynamics
Thermogravimetry
Trifluoroacetic Acid - pharmacology
X-Ray Diffraction
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Summary:•Chitosan films properties are affected by the addition of perfluorinated acids.•Chitosan degradation temperature diminishes with the fluorinated chain length.•Chitosan amorphous character increases with the fluorinated chain length.•Chitosan-PFOA affects lipid bilayers in various cell lines.•Chitosan-PFOA presents bioadhesivity respect to Pseudomonas aeruginosa. 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 13C 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.
ISSN:0927-7765
1873-4367
DOI:10.1016/j.colsurfb.2013.10.013