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Article Dans Une Revue ACS Applied Polymer Materials Année : 2022

Hydrodynamic spinning of protein fractal aggregates into core-shell fibers

Résumé

Using fractal protein aggregates as building blocks, porous fibers were produced. The suspension of aggregates was co-injected with a solution of calcium chloride. Sol-gel transition of the suspension was induced by diffusion of calcium ions in the jet. The production of these fibers required a precise control of both hydrodynamic and physicochemical conditions as hydrodynamic instabilities competed with the gelation kinetics. By increasing the calcium concentration, several regimes were observed: swollen, dispersed and shrunk fibers. In the first regime, homogeneous fibers were obtained. In the last one, osmotic phenomena led to a spontaneous core-shell structure with a dense shell.
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Dates et versions

hal-03681028 , version 1 (30-05-2022)

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Citer

Alice Vilotte, Clément de Loubens, Deniz Gunes, Christophe Schmitt, Hugues Bodiguel. Hydrodynamic spinning of protein fractal aggregates into core-shell fibers. ACS Applied Polymer Materials, 2022, ⟨10.1021/acsapm.2c00536⟩. ⟨hal-03681028⟩

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