Re:3M to end 'forever chemicals' output at cost of up to $2.3B
by amluto on Wednesday December 21, 2022 @09:52AM
(#34081420)
Zojirushi also makes them without the liner. It’s a choose-your-poison situation: the lined ones seem to perform much better with green tea.
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Re:3M to end 'forever chemicals' output at cost of up to $2.3B
by atombender on Wednesday December 21, 2022 @09:54AM
(#34081451)
Interesting, I wasn't aware of that. What do you mean by "perform" here?
Re:3M to end 'forever chemicals' output at cost of up to $2.3B
by selimthegrim on Wednesday December 21, 2022 @11:58AM
(#34083207)
Could be the green tea is made with slightly lower temperature water so less likely to leach chemicals off of the liner
Re:3M to end 'forever chemicals' output at cost of up to $2.3B
by amluto on Wednesday December 21, 2022 @11:02PM
(#34089639)
In theory the liner is PTFE (or maybe a different fluoropolymer) with nothing left to leach out. PTFE and its relatives are stable to temperatures well above that of boiling water, so leaching shouldn’t be an issue.
(One big problem with PTFE is that it starts to slowly decompose at a lower temperature than its melting point. This makes it messy to work with. As I understand it, the decomposition products are gasses, so this is a problem at the factory and for the environment, but I don’t think its a problem for end users.)