5. Intrinsic improvement of barrier properties
The possibilities for improving barrier properties by inserting additives into a polymer matrix cover 2 strategies:
active charges that trap or catalyze the trapping of the permeant (oxygen scavengers);
passive fillers that increase the diffusion path of permeants (nanocomposites).
5.1 Active packaging: oxygen scavengers
Here, we'll be looking at absorbers integrated into the film, rather than absorbent bags linked to the contents.
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Intrinsic improvement of barrier properties
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