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首页> 外文期刊>Journal of Polymers and the Environment >Fungal Degradation of Poly(Butylene Adipate-Co-Terephthalate) in Soil and in Compost
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Fungal Degradation of Poly(Butylene Adipate-Co-Terephthalate) in Soil and in Compost

机译：土壤和堆肥中聚己二酸丁二醇酯-对苯二甲酸对苯二甲酸酯的真菌降解

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摘要

The present work mainly dedicated to fungal degradation of poly(butylene adipate-co-terephthalate) [PBAT], to enclose the role of fungi in a real process of biodegradation, the degree of degradation, and to understand the kinetics of PBAT biodegradation. Respirometer tests were realized in soil at 30 ℃, and in compost at 30 and 58 ℃. Results have shown that temperature is one of the essential parameters governing the fungal degradation of PBAT. Moreover, the final rates of PBAT biodegradation in an inoculated compost with fungi and in a real compost were found comparable, which means that the selected fungi were efficient as much as a mixture of bacteria and fungi. The curves of PBAT biodegradation were modeled by Hill sigmoid. Fungal degradation was completed by investigating the physical and the chemical properties of the polymer during the process of degradation using several analytical methods such as matrix assisted laser desorption ionization-time of fly spectroscopy, size exclusion chromatography, and differential scanning calo-rimetry. These experiments led to a better understanding of the various stages of fungal degradation of PBAT: hydrolysis as well as mineralization. Furthermore, the analysis of metabolizing products was investigated also.
机译：目前的工作主要致力于聚（己二酸丁二酯-对苯二甲酸对苯二甲酸酯）[PBAT]的真菌降解，以阐明真菌在实际生物降解过程中的作用，降解程度以及了解PBAT生物降解的动力学。在30℃的土壤中以及30和58℃的堆肥中进行了呼吸计测试。结果表明，温度是控制PBAT真菌降解的重要参数之一。此外，发现在接种真菌的堆肥中和在实际堆肥中，PBAT的最终生物降解速率是可比的，这意味着所选真菌与细菌和真菌的混合物一样有效。 PBAT生物降解曲线通过希尔乙状结肠模拟。通过使用几种分析方法，例如基质辅助激光解吸电离飞行时间，尺寸排阻色谱法和差示扫描量热法，研究聚合物在降解过程中的物理和化学性质，可以完成真菌降解。这些实验使人们更好地了解了PBAT真菌降解的各个阶段：水解以及矿化。此外，还研究了代谢产物的分析。

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