Biodegradable plastic invented to end microplastic conundrum

In a major breakthrough against the growing threat of microplastic pollution, scientists in Japan have developed a new form of plastic that is not only strong and flexible but also completely biodegradable. The innovation comes from researchers at the RIKEN Center for Emergent Matter Science, who have created the material using plant-derived cellulose—the most abundant organic compound on Earth.

Designing a plastic that balances durability with rapid biodegradability has long challenged scientists. After extensive experimentation, the RIKEN team succeeded in producing a material made entirely from safe, FDA-approved components, including biodegradable wood pulp. According to reports, the plastic can break down easily in water without leaving behind harmful residues.

A key factor in the breakthrough was the use of choline chloride, a salt commonly employed as a food preservative. By adjusting the amount of this compound, researchers were able to precisely control the plastic’s properties. The material can be made as rigid as glass, stretched up to 130 per cent of its original length without breaking, or produced in ultra-thin sheets as fine as 0.07 millimetres. These tunable features allow the plastic to match or even exceed the performance of conventional petroleum-based plastics.

The study, led by polymer chemist Takuzo Iida, was recently published in the Journal of the American Chemical Society. Iida noted that while earlier research in this field remained largely theoretical, the latest results demonstrate that the technology has now reached a practical and scalable stage.

Major Discovery on Microplastics

The development comes at a critical moment, as microplastics continue to accumulate in ecosystems and enter the human body. A recent review by Concordia University in Canada found that people ingest between 39,000 and 52,000 microplastic particles annually, with bottled water drinkers consuming up to 90,000 additional particles each year. Researchers hope the new biodegradable plastic could soon offer a safer, sustainable alternative and significantly reduce this growing environmental and health concern.