Degradation of Polyethylene and Nylon by White Rot Fungi and its related enzymes

白腐菌及其相关酶对聚乙烯和尼龙的降解

• 批准号: 13660161
• 负责人: NISHIDA Tomoaki
• 金额: $ 2.24万
• 依托单位: Shizuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13660161/
• 关键词: Synthetic polymer; Polyethylene degradation; Nylon degradation; Laccase; 1-Hydroxybenzotriazole; Ligninilytic enzyme; ポリエチレン生分解; ナイロン生分解; 白色腐朽菌

We investigated whether the laccase-mediator system (LMS) with 1-hydroxybenzotriazole (HBT) as a mediator could degrade high-molecular-weight polyethylene and nylon-66 membranes. The LMS markedly reduced the elongation and tensile strength of these membranes. After 3 days of treatment with the LMS, the Mw of polyethylene decreased from 242,000 to 28,300, and that of nylon-66 from 79,300 to 14,700. The LMS also decreased the polydispersity (Mw/Mn) of polyethylene and nylon-66. Furthermore, these reductions in elongation, tensile strength, and molecular weight were accompanied by morphological disintegration of the polyethylene and nylon-66 membranes. These results strongly suggest that the LMS with HBT can effectively degrade polyethylene and nylon-66.

研究了以1-羟基苯并三氮唑（HBT）为介体的漆酶介体体系（LMS）对高分子量聚乙烯和尼龙66膜的降解作用。LMS显著降低了这些膜的伸长率和拉伸强度。用LMS处理3天后，聚乙烯的Mw从242，000降低到28，300，尼龙-66的Mw从79，300降低到14，700。LMS还降低了聚乙烯和尼龙-66的多分散性（Mw/Mn）。此外，伸长率、拉伸强度和分子量的这些降低伴随着聚乙烯和尼龙-66膜的形态崩解。这些结果有力地表明，具有HBT的LMS可以有效地降解聚乙烯和尼龙-66。

项目成果

F.Fujisawa, H.Hirai, T.Nishida: "Degradation of Polyethylene and Nylon-66 by the Laccase-Mediator System"Journal of Polymers and the Environment. 9. 103-108 (2001)

F.Fujisawa、H.Hirai、T.Nishida：“漆酶介体系统对聚乙烯和尼龙 66 的降解”聚合物与环境杂志。