降解聚丁二酸丁二醇酯(PBS)微生物菌种的筛选及降解性的研究

The research of degradation properties of screened microorganisms to PBS

为了获取土壤中能降解聚丁二酸丁二醇酯(PBS)的微生物菌种,并研究其对PBS的降解效果,以陕西花园土壤为介质,对其中的细菌、真菌和放线菌分别进行了驯化和筛选.选取活性强的几种菌种对PBS进行了生物降解实验,并且研究了降解前后PBS的表面形态、质量损失和力学性能的变化.研究结果表明:在陕西花园土壤中降解PBS最快的菌为真菌,经上述菌种侵蚀后的PBS晶体均受到一定程度的破坏,力学性能随降解时间的延长逐步降低.

The bacteria,fungi,and actinomycete in Shaanxi garden soil were domesticated and screened to obtain the microorganism to degrade PBS.Several high effective kinds of bacteria were picked to degrade PBS,then the mass loss,surface morphology and mechanical properties of nature and degraded PBS were studied,the results showed that,fungi could effectively degrade PBS and the PBS crystals were damage by the erosion of these bacteria,the elongation at break reduced gradually with the degradation time.