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Endlessly recyclable plastic (Javascript required.)
By separating plastic monomers from chemical additives, researchers may have created fully recyclable plastics.
Molecular scientists at the Lawrence Berkeley National Laboratory developed a new type of plastic: polydiketoenamine, or PDK. When immersed in an acidic solution, PDK monomers were broken down and were freed from the additive compounds used in plastic production.
Berkeley Lab staff scientist Brett Helms said: "With PDKs, the immutable bonds of conventional plastics are replaced with reversible bonds that allow the plastic to be recycled more effectively."
Commercial plastics generally contain additives such as dyes or fillers to make them hard, stretchy, coloured or clear. The problem is these additives have different chemical compositions and are hard to separate from the monomers.
Also at Berkeley Lab.
See also: Researchers develop plastic that they are calling the 'Holy Grail' of recycling
This infinitely-recyclable plastic might help us finally clean up landfills and oceans
Closed-loop recycling of plastics enabled by dynamic covalent diketoenamine bonds (DOI: 10.1038/s41557-019-0249-2) (DX)
(Score: 2) by realDonaldTrump on Thursday May 09 2019, @04:46PM
The Ralph Nader Enviro Nuts, since the 70s, have been screaming for the ban on Poly Vinyl Chloride. Also known as, PVC. Because, "oh, cancer!" We've been using that one for so long, where is the cancer? But they did the ban in Nassau County. Not the whole county, little town called Glen Cove. Very small and, it's going to stay that way. You go (foolishly) to the restaurant in Glen Cove. And, you ask for the take out container. Sorry, they can't give it to you. No PVC allowed and they can't do the Styrofoam either. It's absolutely killing the economy there. They made a dumb move, too bad. But, don't worry. We will NEVER do that for the Federal!!!!