Diamanti E, Muzzio N, Gregurec D, Irigoyen J, Pasquale M, Azzaroni O, Brinkmann M, Enrique Moya S (2016)
Publication Type: Journal article
Publication year: 2016
Book Volume: 145
Pages Range: 328-337
DOI: 10.1016/j.colsurfb.2016.05.013
Polyelectrolyte multilayers (PEMs) of poly- l-lysine (PLL) and alginic acid sodium salt (Alg) are fabricated applying the layer by layer technique and annealed at a constant temperature; 37, 50 and 80 °C, for 72 h. Atomic force microscopy reveals changes in the topography of the PEM, which is changing from a fibrillar to a smooth surface. Advancing contact angle in water varies from 36° before annealing to 93°, 77° and 95° after annealing at 37, 50 and 80 °C, respectively. Surface energy changes after annealing were calculated from contact angle measurements performed with organic solvents. Quartz crystal microbalance with dissipation, contact angle and fluorescence spectroscopy measurements show a significant decrease in the adsorption of the bovine serum albumin protein to the PEMs after annealing. Changes in the physical properties of the PEMs are interpreted as a result of the reorganization of the polyelectrolytes in the PEMs from a layered structure into complexes where the interaction of polycations and polyanions is enhanced. This work proposes a simple method to endow bio-PEMs with antifouling characteristics and tune their wettability.
APA:
Diamanti, E., Muzzio, N., Gregurec, D., Irigoyen, J., Pasquale, M., Azzaroni, O.,... Enrique Moya, S. (2016). Impact of thermal annealing on wettability and antifouling characteristics of alginate poly-l-lysine polyelectrolyte multilayer films. Colloids and Surfaces B: Biointerfaces, 145, 328-337. https://doi.org/10.1016/j.colsurfb.2016.05.013
MLA:
Diamanti, Eleftheria, et al. "Impact of thermal annealing on wettability and antifouling characteristics of alginate poly-l-lysine polyelectrolyte multilayer films." Colloids and Surfaces B: Biointerfaces 145 (2016): 328-337.
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