It created something of a stir back in 2022, when researchers from Aarhus University announced a new and inexpensive way of breaking down polyurethane (PU) plastic into its original components, which can then be recycled into new PU material instead of ending up in landfills or incinerators.
Click here for original story, Old mattresses made new: Simple chemistry can recycle polyurethane
Source: Phys.org