[VygmraMGVl]

The title says this is expanded PTFE, which seems like it wouldn't need an additional PFOTS coating. I doubt it would shed similar small molecules to a PFOTS coating as it's a different material (polymerized tetrafluoroethylene).

I also doubt you would get similar endocrine disruption with PTFE polymerization biproducts since you won't have the "polar head/fluorinated tail" structure that PFOTS has.