<br>58度标准化堆肥温度下聚乳酸降解的结构评价,Chemosphere

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58度标准化堆肥温度下聚乳酸降解的结构评价
Chemosphere ( IF 8.1 ) Pub Date : 2024-03-14 , DOI: 10.1016/j.chemosphere.2024.141729
Jiwon Oh ₁ , Sung Bae Park ₂ , Chaenyung Cha ₃ , Dong Ki Hwang ₄ , Seul-A Park ₂ , Jeyoung Park ₅ , Dongyeop X Oh ₆ , Hyeonyeol Jeon ₇ , Jun Mo Koo ₈

Affiliation

Research Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429, Republic of Korea; School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
Research Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429, Republic of Korea.
School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
Research Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429, Republic of Korea; Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 04107, Republic of Korea.
Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering, Inha University, Incheon, 22212, Republic of Korea.
Research Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429, Republic of Korea; Advanced Materials & Chemical Engineering, University of Science and Technology (UST), Daejeon, 34113, Republic of Korea.
Department of Organic Materials Engineering, Chungnam National University, Daejeon, 34134, Republic of Korea.

石油基塑料在地球上的积累正在造成严重的环境污染。可生物降解塑料作为环保解决方案得到推广，有可能解决这个问题。然而，它们对环境的影响及其自然降解的机制仍然没有得到充分的了解。此外，评估可生物降解塑料的生物降解性的国际标准中规定的具体条件导致了对其现实世界行为的误解。为了正确阐明其降解性和结构之间的关系，本研究模拟了标准化堆肥温度下聚乳酸（PLA）的热效应。 PLA的结晶度越高，降解率越低，这表明结晶度是决定降解的关键因素。 58°C的堆肥温度通过对聚合物的结构影响来诱导结晶，从而降低PLA的降解率。因此，PLA加工和降解过程中温度和结晶的控制至关重要，因为它不仅决定了生物降解性，而且提高了实用性。

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更新日期：2024-03-14

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