According to foreign media New Atlas reports, whether it is harming marine animals, blocking their internal organs when ingested, or forming huge floating "garbage blocks", marine plastic waste is a huge problem. However, products that appear in the form of a better marine biodegradable plastic may bring new hope.
First, some groups have previously developed plastics that can be biodegraded harmlessly in the marine environment. However, according to the research of Osaka University in Japan, they have three main disadvantages: their quality is worse than conventional plastics, the production cost is more than twice as high, and they can only be manufactured in relatively small quantities.
However, the team led by Associate Professor Taka-Aki Asoh of Osaka University and Professor Hiroshi Uyama developed another type of transparent plastic whose main components are cellulose nanofibers and starch, both of which are derived from plants. Due to the use of a proprietary production process, the final product is proven to have excellent water resistance and high strength, and when floating in sea water for a long time, it also has high biodegradability.
In addition, since this plastic is not based on petroleum, its production should not produce any greenhouse gases. "Since we can develop marine biodegradable plastic sheets by combining familiar materials such as starch and cellulose, because these materials are cheap and the manufacturing process is simple, we can expect that the developed materials will be invested soon Actual use, "Asoh said. "We have high hopes for this, and our materials will help solve the growing problem of global marine debris accumulation and have a major social impact."
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