What happen when polypropylene becomes brittle?

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What happen when polypropylene becomes brittle?

Post by Lloydro »


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
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Re: What happen when polypropylene becomes brittle?

Post by ChenBeier »

Polypropylen should not be used below 0°C. It will crack and bigger and smaller particles also powder will be developed.
In comparison Polyethylen can go down to - 40°C. So 3xchange the Containers for safety reason.
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