Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
Micron. 2010 Jul;41(5):430-8. doi: 10.1016/j.micron.2010.02.008. Epub 2010 Feb 18.
An outdoor soil burial test was carried out to evaluate the degradation of commercially available LDPE carrier bags in natural soil for up to 2 years. Biodegradability of low density polyethylene films in soil was monitored using both optical and scanning electron microscopy (SEM). After 7-9 months of soil exposure, microbial colonization was evident on the film surface. Exposed LDPE samples exhibit progressive changes towards degradation after 17-22 months. SEM images reveal signs of degradation such as exfoliation and formation of cracks on film leading to disintegration. The possible degradation mode and consequences on the use and disposal of LDPE films is discussed.
进行了一项户外土壤掩埋测试，以评估市售 LDPE 载体袋在自然土壤中长达 2 年的降解情况。使用光学显微镜和扫描电子显微镜（SEM）监测了低密度聚乙烯薄膜在土壤中的生物降解性。在土壤暴露 7-9 个月后，薄膜表面可见微生物定殖。暴露于 LDPE 样品在 17-22 个月后逐渐发生降解变化。SEM 图像显示了降解的迹象，如薄膜剥落和形成裂纹，导致分解。讨论了 LDPE 薄膜的可能降解模式及其对使用和处置的影响。
