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scientists create a plastic that can be recycled indefinitely without degrading - polyethylene terephthalate film

by:Cailong     2019-07-26
scientists create a plastic that can be recycled indefinitely without degrading  -  polyethylene terephthalate film
A new type of plastic that can be recycled indefinitely has been developed.
The normal plastic cannot be recycled repeatedly because it will degrade over time when it is recycled.
The plastic is mechanically ground to lower quality plastic.
For example, transparent plastic bottles must be used as lower grade plastics, such as carpets or wool, when reprocessing.
Although biodegradable plastics have been developed, once they break down, the chemical building blocks that make them cannot be reused to make the plastic.
For video TV, rolling down, the production of plastic has increased to the extent that production is expected to exceed 0. 5 billion metric tons in 2050.
Since most plastics are single
These materials will be preserved in the environment for centuries.
So researchers at Colorado State University say there is an urgent need to develop a reusable plastic.
They have developed a chemical recycling method that breaks the plastic down into "building blocks" and can then purify the plastic and convert it into plastic. Dr Jian-
Bo Zhu and his colleagues took an existing plastic for improvement.
They found two catalysts that could efficiently decompose the polymer into a constituent monomer.
About 85.
At this point, the monomer can be reused.
Commenting on the study, Andrew Dev of the University of Birmingham said: "Studies like Zhu et al.
In this case, the waste plastic can be recycled indefinitely without harmful effects on its performance, which will lead to a world in which, plastic is not treated as waste at the end of life, but produces high
Value the product and the original plastic.
The findings of the study were published in the journal Science.
This is not the first time in recent days to propose a solution to the problem of recycling plastics.
Last week, British researchers announced that they had inadvertently made a plastic --
Perform X-time digestive enzymes
Radiation Experiments of natural bacteria found at a recycling center in Japan have led to its mutation into a more powerful enzyme.
The test shows that the laboratory
The mutant manufactured has the ability to supercharge the decomposition of polybenzene ester (PET)
It is one of the most popular plastic forms in the food and beverage industry and converts them into raw chemicals.
This helps reduce the generation of waste and also helps to solve the problem of the use of crude oil in plastic manufacturing.
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