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To Design Truly Compostable Plastic, Scientists Take Cues From Nature

Date Time To Design Truly Compostable Plastic, Scientists Take Cues From Nature Ivan Jayapurna, a UC Berkeley materials science and engineering graduate student, preparing a sample film of a new biodegradable plastic. (Credit: Adam Lau/UC Berkeley) Despite our efforts to sort and recycle, less than 9% of plastic gets recycled in the U.S., and most ends up in landfill or the environment. Biodegradable plastic bags and containers could help, but if they’re not properly sorted, they can contaminate otherwise recyclable #1 and #2 plastics. What’s worse, most biodegradable plastics take months to break down, and when they finally do, they form microplastics – tiny bits of plastic that can end up in oceans and animals’ bodies – including our own.

Corinne scownLe maZhiyuan ruanAaron hallIvan jayapurnaChristopher delreBerkeley ivan jayapurnaTim liKyle zolkinTom russellYufeng jiangRobert ritchieJunpyo kwonPhiljun kangUniversity of massachusettsUs department of defense

New process makes biodegradable plastics truly compostable

E-Mail IMAGE: A modified plastic (left) breaks down after just three days in standard compost (right) and entirely after two weeks. view more Credit: Christopher DelRe, UC Berkeley Biodegradable plastics have been advertised as one solution to the plastic pollution problem bedeviling the world, but today s compostable plastic bags, utensils and cup lids don t break down during typical composting and contaminate other recyclable plastics, creating headaches for recyclers. Most compostable plastics, made primarily of the polyester known as polylactic acid, or PLA, end up in landfills and last as long as forever plastics. University of California, Berkeley, scientists have now invented a way to make these compostable plastics break down more easily, with just heat and water, within a few weeks, solving a problem that has flummoxed the plastics industry and environmentalists.

United statesCorinne scownStephanie mcelhinnyLe maZhiyuan ruanAaron hallIvan jayapurnaThomas russellChristopher delreTim liKyle zolkinYufeng jiangRobert ritchieJunpyo kwonPhiljun kangUniversity of massachusetts

To design truly compostable plastic, scientists take cues from nature

To design truly compostable plastic, scientists take cues from nature
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United statesCorinne scownLe maZhiyuan ruanAaron hallIvan jayapurnaChristopher delreTim liKyle zolkinTom russellYufeng jiangRobert ritchieJunpyo kwonPhiljun kangUs department of defenseUniversity of california