聚丁二酸丁二醇酯 (PBS)、使用过的 PBS 和 PBS/聚羟基烷酸酯 (PHA) 混合物纤维在堆肥和海洋沉积物界面中的降解行为比较

IF 8.6 2区 工程技术 Q1 ENERGY & FUELS
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引用次数: 0

摘要

随着人们对海洋中的微塑料污染和不可生物降解聚合物的持久性日益关注,本研究评估了基于聚丁二酸丁二醇酯(PBS)的渔具在不同条件下的生物降解性:原始的 PBS 纤维、捕鱼时使用的 PBS 纤维(PBS_used)以及与 10% 聚羟基烷酸酯(PHA)混合的 PBS 纤维。通过分别参照 ISO 14855 和 ISO 19679 标准模拟堆肥和海洋-沉积物界面环境,我们不仅要评估这些纤维的降解性能,还要考察降解前后的物理和化学特性变化。PBS、PBS_used 和 PBS/PHA (9:1) 纤维在堆肥环境中的降解率分别为 31.9%、35.5% 和 39.5%,在海水-沉积物界面的降解率分别为 20.3%、22.1% 和 25.9%。通过分子量测量、场发射扫描电子显微镜、傅立叶变换红外光谱、拉伸性能评估和热重分析等综合理化分析,比较了基于 PBS 的纤维在不同降解环境下的降解行为。这项研究表明,基于 PBS 的渔具可以在实际捕鱼过程中遇到的各种条件下进行生物降解,从而防止幽灵捕鱼,并减轻遗弃、丢失或以其他方式丢弃渔具的问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Comparative degradation behavior of polybutylene succinate (PBS), used PBS, and PBS/Polyhydroxyalkanoates (PHA) blend fibers in compost and marine–sediment interfaces

Comparative degradation behavior of polybutylene succinate (PBS), used PBS, and PBS/Polyhydroxyalkanoates (PHA) blend fibers in compost and marine–sediment interfaces

Amid increasing concerns over microplastic pollution and the persistence of nonbiodegradable polymers in the ocean, this study evaluates the biodegradability of polybutylene succinate (PBS)-based fishing gear under different conditions: pristine PBS fibers, PBS fibers utilized in fishing (PBS_used), and PBS fibers blended with 10% polyhydroxyalkanoate (PHA). By simulating compost and marine–sediment interface environments with reference to ISO 14855 and ISO 19679 standards, respectively, we aimed not only to assess the degradation performance of these fibers but also to examine the physical and chemical property changes pre and postdegradation. PBS, PBS_used, and PBS/PHA (9:1) fibers exhibited degradation rates of 31.9%, 35.5%, and 39.5% in compost environments, and 20.3%, 22.1%, and 25.9% at the seawater–sediment interface, respectively. Through comprehensive physicochemical analyses involving molecular weight measurement, field emission–scanning electron microscope, Fourier transform infrared spectroscopy, tensile property evaluation, and thermogravimetric analysis, the degradation behavior of PBS-based fibers depending on the degradation environment was compared. This study suggests that PBS-based fishing gear can biodegrade under various conditions encountered in the actual fishing sector, thereby preventing ghost fishing and mitigating the issue of abandoned, lost, or otherwise discarded fishing gear.

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来源期刊
Sustainable Materials and Technologies
Sustainable Materials and Technologies Energy-Renewable Energy, Sustainability and the Environment
CiteScore
13.40
自引率
4.20%
发文量
158
审稿时长
45 days
期刊介绍: Sustainable Materials and Technologies (SM&T), an international, cross-disciplinary, fully open access journal published by Elsevier, focuses on original full-length research articles and reviews. It covers applied or fundamental science of nano-, micro-, meso-, and macro-scale aspects of materials and technologies for sustainable development. SM&T gives special attention to contributions that bridge the knowledge gap between materials and system designs.
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