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电子束处理作为一种有前景的工具用于净化含溴化阻燃剂的聚合物。

Electron Beam Processing as a Promising Tool to Decontaminate Polymers Containing Brominated Flame Retardants.

作者信息

Benmammar Rachida Khadidja, Mundlapati Venkateswara Rao, Bouberka Zohra, Barrera Ana, Staelens Jean-Noël, Tahon Jean-François, Ziskind Michael, Carpentier Yvain, Focsa Cristian, Supiot Philippe, Foissac Corinne, Maschke Ulrich

机构信息

Unité Matériaux et Transformations (UMET), UMR 8207, CNRS, INRAE, Université de Lille, 59000 Lille, France.

Physique des Lasers Atomes et Molécules (PhlAM), UMR 8523, CNRS, Université de Lille, 59000 Lille, France.

出版信息

Molecules. 2023 Nov 24;28(23):7753. doi: 10.3390/molecules28237753.

DOI:10.3390/molecules28237753
PMID:38067482
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10708486/
Abstract

Electron Beam (EB) irradiation was utilized to decontaminate model systems of industrial polymers that contain a brominated flame retardant (BFR). Acrylonitrile-butadiene-styrene (ABS) and Polycarbonate (PC) are two types of polymers commonly found in Waste Electrical and Electronic Equipment (WEEE). In this study, these polymers were exposed to EB irradiation to degrade DecaBromoDiphenylEther (DBDE), one of the most toxic BFRs. Fourier-transform infrared spectroscopy analysis demonstrated an 87% degradation rate of DBDE for the ABS-DBDE system and 91% for the PC-DBDE system following an 1800 kGy irradiation dose. Thermal analysis using Differential Scanning Calorimetry revealed the presence of crosslinking in ABS and a minor reduction in the glass transition temperature of PC after EB processing. Polymers exhibited thermal stability after photolysis, as indicated by thermogravimetric analysis. In summary, EB irradiation had no impact on the overall thermal properties of both polymers. High-resolution mass spectrometry analysis has confirmed the debromination of both ABS-DBDE and PC-DBDE systems. Therefore, the results obtained are promising and could offer an alternative approach for removing bromine and other additives from plastic E-waste.

摘要

电子束（EB）辐照被用于对含有溴化阻燃剂（BFR）的工业聚合物模型系统进行去污处理。丙烯腈-丁二烯-苯乙烯共聚物（ABS）和聚碳酸酯（PC）是废弃电子电气设备（WEEE）中常见的两种聚合物类型。在本研究中，这些聚合物接受电子束辐照以降解十溴二苯醚（DBDE），它是毒性最强的溴化阻燃剂之一。傅里叶变换红外光谱分析表明，在1800千戈瑞的辐照剂量后，ABS-DBDE系统中DBDE的降解率为87%，PC-DBDE系统中为91%。使用差示扫描量热法进行的热分析显示，电子束处理后，ABS中存在交联，PC的玻璃化转变温度略有降低。热重分析表明，聚合物在光解后表现出热稳定性。总之，电子束辐照对两种聚合物的整体热性能没有影响。高分辨率质谱分析已证实ABS-DBDE和PC-DBDE系统均发生了脱溴反应。因此，所获得的结果很有前景，可为从塑料电子废物中去除溴和其他添加剂提供一种替代方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/6b63dcc4a51d/molecules-28-07753-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/2fe69b8f6324/molecules-28-07753-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/e87e094c7358/molecules-28-07753-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/65bdf3fea9fd/molecules-28-07753-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/d807e4b6ef21/molecules-28-07753-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/5b130c27b8b4/molecules-28-07753-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/14b93b7f4c6a/molecules-28-07753-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/0286364a2f27/molecules-28-07753-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/06bdcfcf047a/molecules-28-07753-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/7a4405d53818/molecules-28-07753-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/6b63dcc4a51d/molecules-28-07753-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/2fe69b8f6324/molecules-28-07753-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/e87e094c7358/molecules-28-07753-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/65bdf3fea9fd/molecules-28-07753-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/d807e4b6ef21/molecules-28-07753-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/5b130c27b8b4/molecules-28-07753-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/14b93b7f4c6a/molecules-28-07753-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/0286364a2f27/molecules-28-07753-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/06bdcfcf047a/molecules-28-07753-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/7a4405d53818/molecules-28-07753-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dd2/10708486/6b63dcc4a51d/molecules-28-07753-g010.jpg

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