Create New Plastic Scientists That Could Be Fully Recyclable

Plastic remains one of the most-used materials for making many of the things we use in our everyday lives.

Things made of plastic can be very strong and last a long time. They also do well in extreme heat and cold. Plastic is as much lighter than metal and can easily be formed into different shapes. This makes the material ideal for many different industries.

But the general use of plastics is the major cause for the environment. Plastic material is flooding landfills and causes severe damage in the world's oceans.

Plastics can take hundreds of years to break down on their own. Very few kinds are highly recyclable. This is because of the way plastics are formed.

It has been estimated that the most reusable types of plastic can only be recycled at a rate of 20 to 30 percent. Even when recycling is possible, the process is costly, can use a lot of energy and, in many cases, produces poor-quality materials.

But a team of researchers working at the U.S. Department of Energy said it was 100 percent recyclable.

The team works at the Department of Energy Lawrence Berkeley National Laboratory in California. It has been reported in the journal Nature Chemistry.

The researchers say the new material is a plastic polymer called polydiketoenamine, PDK gold. The team reports that the material can be broken down in parts at the molecular level.

It can then be built up to form plastics of different shapes, textures, colors and more. The researchers say this process can be repeated over and over again

"Most plastics were never made to be recycled," Peter Christensen lead researcher said in a statement. Christensen works at Berkeley Lab's Molecular Foundry Center. "But we have discovered a new way to assembles plastics that takes recycling into consideration from a molecular perspective. "

The team explained that all plastics – from water bottles to automotive parts – are made up of polymers with a molecular structure. These polymers are made up of carbon-containing compounds known as monomers.

Many plastics have different types of chemicals. The problem is that these chemicals attach to the monomers, which remain in the plastics even after the material gets processed at a recycling plant.

The research team reported that, with the newly discovered PDK material, the monomers could be recovered and separated from any chemical additives. This part of the process would involve putting the plastic material into "a highly acidic solution."

Brett Helms is a scientist at Berkeley Lab's Molecular Foundry who worked on the study. He said the team is interested in the possibility of redirect plastic lifecycles from "linear to circular."

Next, the researchers say they plan to develop PDK plastics "with a wide range of thermal These plastics could be used for many types of cloth foams. In addition, the team is looking to include plant-based materials in the process.

Helms said the world is currently "at a critical point," at which new recycling plants and processes need to be developed and modernized to deal with long-lasting plastic waste. New recycling centers could be designed to recycle or upcycle PDK and related plastics.

"Then we would be able to more effectively divert from landfills and the oceans, "Helms said. "This is an exciting time to start thinking about how to design both materials and recycling facilities to enable circular plastics, "he added.

I'm Bryan Lynn.

Bryan Lynn wrote this story for VOA Learning English, based on a report from Nature and online sources. Ashley Thompson was the editor.

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Words in This Story

ideal – adj. perfect, of the best choice possible

polymer – not. a natural or artificial substance made from many smaller molecules

texture – not. the way something feels then you touch it

assembles – v. to build or put together

perspective – not. way of thinking about or looking at something

thermal – adj. relating to heat

foam – not. lightweight material produced from a chemical process

divert – v. send something somewhere different where it was expected to go

enable – v. make something possible