Plastic doesn't seem like a good solution, considering that notes are moved, stretched, flexed a lot and endure a lot of friction. Seems like a needless source for more plastic particles shedding into the environment.
You might be surprised to learn that a lot of the world uses polymer banknotes which are siignificantly more durable and last a lot longer than traditional 'paper' based currencies. The are incredibly hard to tear/break and they do not wear out or stretch. We've been using these in Australia since 1996.
Having handled a fair amount of US currency I can say it _feels_ disgusting to handle after a certain amount of wear and often reminds me of a moist tissue. It also doesn't help that visually the notes all look very similar (as opposed to on polymer notes which have significantly different appearances and colours)
I'm aware it's being done already. But I'm not sure it would be a good starting point when designing a new set of notes. Euro banknotes are mostly made from cotton, and a lot of thought and effort is going into reducing the environmental footprint. The most circulated denominations last on average four years, the rest significantly longer I presume. How does that compare to polymer based banknotes?
In Canada they last 8-16 years… polymer notes are unequivocally better. Corruption and inertia is the only reason they are not everywhere. As to plastic pollution, banknotes are already a closed, circular loop and hence you get the miracle properties of plastic without the downside.
I think the concern was with the plastic money shedding micro plastics or threads as it slowly degrades over time, like we're finding other plastic does like our clothing. Not saying enough to take out of circulation, but does it shed any particles during its life?
Does it shed particles? In a world of absolutism yes they would.
I don’t know if there are actually any studies but fyi cotton notes will also have plastic features and a synthetic, uv cured varnish to try and get some extra life (although far less than polymer) so also ’shed’. Banknotes are regularly inspected and worn or damaged notes are pulled - they really are the perfect product for plastic.
By weight though, it's a lot less plastic being put out there. Is it worse than clothing? Maybe not, but I'd continue to be skeptical about it until some studies have been done.
https://en.wikipedia.org/wiki/Polymer_banknote
Having handled a fair amount of US currency I can say it _feels_ disgusting to handle after a certain amount of wear and often reminds me of a moist tissue. It also doesn't help that visually the notes all look very similar (as opposed to on polymer notes which have significantly different appearances and colours)