生分解性マイクロプラスチックに挨拶しよう(Say Hello to Biodegradable Microplastics)

ad

2024-03-21 カリフォルニア大学サンディエゴ校(UCSD)

マイクロプラスチックは日常のプラスチック製品から放出され、海洋や土壌だけでなく、動脈や肺、胎盤にも見つかっています。分解には100〜1000年かかり、地球と身体を毎日汚染しています。カリフォルニア大学サンディエゴ校の科学者とAlgenesis社の研究者は、植物由来のポリマーが7ヶ月未満で生分解することを示す新しい研究を発表しました。このポリマーは、マイクロプラスチックレベルでも分解され、環境と健康への影響を最小限に抑える可能性があります。

<関連情報>

バイオベースの熱可塑性ポリウレタンから生成されたマイクロプラスチックの迅速な生分解 Rapid biodegradation of microplastics generated from bio-based thermoplastic polyurethane

Marco N. Allemann,Marissa Tessman,Jaysen Reindel,Gordon B. Scofield,Payton Evans,Robert S. Pomeroy,Michael D. Burkart,Stephen P. Mayfield & Ryan Simkovsky
Scientific Reports  Published:12 March 2024
DOI:https://doi.org/10.1038/s41598-024-56492-6

生分解性マイクロプラスチックに挨拶しよう(Say Hello to Biodegradable Microplastics)

Abstract

The accumulation of microplastics in various ecosystems has now been well documented and recent evidence suggests detrimental effects on various biological processes due to this pollution. Accumulation of microplastics in the natural environment is ultimately due to the chemical nature of widely used petroleum-based plastic polymers, which typically are inaccessible to biological processing. One way to mitigate this crisis is adoption of plastics that biodegrade if released into natural environments. In this work, we generated microplastic particles from a bio-based, biodegradable thermoplastic polyurethane (TPU-FC1) and demonstrated their rapid biodegradation via direct visualization and respirometry. Furthermore, we isolated multiple bacterial strains capable of using TPU-FC1 as a sole carbon source and characterized their depolymerization products. To visualize biodegradation of TPU materials as real-world products, we generated TPU-coated cotton fabric and an injection molded phone case and documented biodegradation by direct visualization and scanning electron microscopy (SEM), both of which indicated clear structural degradation of these materials and significant biofilm formation.

0504高分子製品
ad
ad
Follow
ad
タイトルとURLをコピーしました