How do waste plastics turn into solid polymers? See how experts say...

According to overseas media reports, Italian scientists have recently invented a new technology that can produce high-strength, high-value polymers from a mixture of waste plastics.

Scientists say that this pathway is the decomposition of waste plastic molecules, and then these molecules are re-synthesized into hybrid molecules, resulting in uniform melting. The latest method is to add solid carbon dioxide (ie dry ice) to the mixture. The carbon dioxide becomes a liquid under a certain pressure, causing a slight explosion like a hot ball collision. Some of the carbon dioxide evaporates into a gas within a few seconds, resulting in various molecules. The fragments react at high speed with the unpaired electrons at the end of the decomposition chain and rapidly recombine to form a strong new polymer.

It is reported that these composite materials have the same strength as pure polyethylene and are as hard and durable as PVC plastic.

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