July 07, 2022, 03:51:24 AM
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Topic: What happen when polypropylene becomes brittle?  (Read 300 times)

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Offline shvcko99

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What happen when polypropylene becomes brittle?
« on: May 12, 2022, 05:52:05 AM »
What happens when commonly available polypropylene become brittle? I mean, what will it look like when it becomes brittle? Will it break as tiny insignificant powders or torn into smaller part but easily observable?

I'm asking this question because I have been freezing foods in freezer with PP containers probably well below 0ºC but I only happen to know that Polypropylene will become brittle below 0ºC. If it will become powder than it is very dangerous to the food but if it will be just torn into parts then I'll keep freezing food with PP without too much worries

Offline Borek

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Re: What happen when polypropylene becomes brittle?
« Reply #1 on: May 12, 2022, 06:23:01 AM »
It won't turn into a powder just because, and it is safe for food storage.
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Offline shvcko99

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Re: What happen when polypropylene becomes brittle?
« Reply #2 on: May 12, 2022, 03:09:58 PM »
It won't turn into a powder just because, and it is safe for food storage.

so it will just break into significant parts in case of being brittle, am I correct

I know that it will not leach, but if it could break into powders then chances are I'll not be able to clean it up and have it eaten with normal food

Offline Borek

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Re: What happen when polypropylene becomes brittle?
« Reply #3 on: May 12, 2022, 03:34:18 PM »
so it will just break into significant parts in case of being brittle, am I correct

Yep, that's what I would expect.

Not that I had it ever break, I believe I saw PP container with a small crack, but still in one piece.
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