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Just wanted to post this as although it’s just at the stage of research it’s interesting. It’s using a thin layer of Graphene to protect artwork from degradation:

https://www.nature.com/articles/s41565-021-00934-z

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Interesting. I am sure that much more testing needs to be done before recommending such a procedure. Certainly, one would need to wait a very long time before depositing a film like this on an oil layer since its impermeability to oxygen (if that is truly possible in a real-world scenario) would mean that no further oxidation could occur in the paint film.
This reminds me of a conversation I had with a real maverick in my field about the possibility of using a plasma to fluoride a surface (they were speaking about acrylic dispersion paints) to make it basically impervious to water related problems. Sounds good at the outset but who knows what unforeseen consequences could occur in the future.

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Thank you for sharing this link. Very interesting indeed. It looks like they use a modified laminator – so possibly only very flat and not temperature sensitive materials could be coated with this method at present. But an interesting start. 

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