2019
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Polydiketoenamine(PDK)
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Polyethylene Terephthalate(PETE)
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Polyvinyl Chloride (PVC)
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Polypropylene (PP)
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Detailed explanation-1: -The creation of the new material, called polydiketoenamine, or PDK, was reported in the journal Nature Chemistry. “Most plastics were never made to be recycled,” said lead author Peter Christensen, a postdoctoral researcher at Berkeley Laboratory’s Molecular Foundry.
Detailed explanation-2: -Plastic: Plastic bottles and containers that bear the 1 or 2 plastic resin codes, also called SPI codes, can be recycled. (SPI stands for Society of the Plastics Industry).
Detailed explanation-3: -But all polymers are, technologically, 100% recyclable. Some of them have the perfect cradle-to-cradle lifecycle: they can be used again and again to produce the same goods. Some plastics can be reused just as they are by shredding an object into flakes, melting it, and reusing.
Detailed explanation-4: -The plastics that can be recycled are generally from type 1 (PET), type 2 (HDPE), type 4 (LDPE) or type 5 (PP).
Detailed explanation-5: -Number 6 - PS - Polystyrene: Plastic cups, disposable cutlery and cups (clear and colored), coffee cups, packing peanuts, Styrofoam insulation. Note that most cities accept plastics #6 for recycling, but NOT styrofoam, peanuts, etc. (these are contaminated by food easily).