Only 2 percent of the 78 million tons of manufactured plastics are currently recycled into similar products because polyethylene (PE) and polypropylene (PP), which account for two-thirds of the world’s plastics, have different chemical structures and cannot be efficiently repurposed together. That could all change with a new discovery.
from Engineering and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2017/02/170224092604.htm
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