CLEANING OF DISPOSABLE MASKS
Some investigations have indicated that the hydrophobic coating on the filter material of face masks is degraded when it is washed in surfactants (soap and water) really? and polar solvents (-OH).
This coating is a trade secret but has to be a siloxane.
Siloxanes are used in cosmetics and most in the family are generally recognised as safe.
Siloxanes are available in native form in many products such as tyre shine, waterproof clothing spray, anti foaming agent and masonry additive.
I suggest that filter material can be decontaminated with 70% -OH or 3% H2O2, then reproofed by spraying it with Polydimethylsiloxane ( $50 AUD/1L) and drying.
I'm gonna hassle the robots at the chemical company that makes my tyre shine and ask them exactly what goes into their cans. Failing that im going to cough up $50 for a lifetime supply of water based siloxane.
cross posting on /pol/ and /pnd/