Because of the range of compounds found, the researchers say that they believe recycled plastics are unfit for most uses and that they don’t contribute to a circular material lifecycle.
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Or at least use the right plastic for them. PLA readily decomposes in only a few days under industrial composting conditions at 55-70ºC. Whereas ABS, a commonly used plastic in many applications, doesn’t react to composting and can last 1000+ years in a landfill.
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