How does glue in bottles stay wet?
In: Chemistry
It’s air tight so evaporation can not occur as rapidly. That’s why if you squeeze the bottle when it’s closed, you can’t squeeze, because air cannot escape…so moisture is also trapped in as well. However, it’s not “perfectly” sealed, so over the course of time, it will eventually dry out.
It depends on how the particular glue cures. Some cures by evaporating solvents. The bottle keeps the concentration of these solvents high enough that no more can evaporate, and the glue can’t cure. Some cure from exposure to moisture. The bottle keeps moisture out, so the glue can’t cure. Some cure from contact with oxygen, and the bottle keeps this out.
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