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Controlled diffusion by thin layer coating: The intricate case of the glass-stopper interface

Abstract : A comprehensive study was carried out to investigate the critical role played by the interface between the stopper and the bottleneck on oxygen penetration into the bottle, as well as the effect of surface treatment of the stopper. First, the compression of micro-agglomerated cork, at close to 40% (similar to that of a cork stopper in a still wine bottleneck), had a very limited effect on the oxygen transfer. Second, once a cork was inserted into a glass bottleneck without any surface treatment, up to 99% of the total oxygen transfer took place at the stopper-bottleneck interface. Third, when the cork surface was coated with a paraffin-silicone mixture, there was almost no oxygen transfer at the interface. Although initially used as a slippery agent for easier uncorking, the surface coating of the stopper, as a thin layer of several hundred nanometers, had a remarkable and unexpected impact on the control of the oxygen transfer.
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Submitted on : Wednesday, August 24, 2022 - 10:37:03 AM
Last modification on : Monday, November 21, 2022 - 3:53:30 AM
Long-term archiving on: : Friday, November 25, 2022 - 7:19:34 PM


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Julie Chanut, Jean-Pierre Bellat, Régis Gougeon, Thomas Karbowiak. Controlled diffusion by thin layer coating: The intricate case of the glass-stopper interface. Food Control, 2021, 120, pp.107446. ⟨10.1016/j.foodcont.2020.107446⟩. ⟨hal-02989078⟩



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