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来自不同分离系统的塑料包装废物的质量比较:通过FTIR光谱的非负矩阵因子化来增强结果

Pia Klingenberg¹, Robert Brüll¹, Tanja Fell²

¹Fraunhofer Institute for Structural Durability and System Reliability LBF, Division Plastics, Schlossgartenstr. 6, D-64289 Darmstadt, Germany.

Waste management (New York, N.Y.)

|February 24, 2024

概括

塑料废物的质量因其类型和收集方法而异. 像LDPE和PP这样的来源后分离 (P) 塑料显示出更多的污染,而HDPE无论来源如何都保持高质量.

科学领域:

聚合物科学聚合物科学
废物管理废物管理
材料科学材料科学材料科学

背景情况:

塑料垃圾的源分离 (S) 与后源分离 (P) 假定会影响流质量.
评估来自不同收集系统的多聚烯 (LDPE,HDPE,PP) 质量对于回收至关重要.

研究的目的:

为了比较来自S和P系统的LDPE,HDPE和PP的质量.
评估洗和分类对塑料废弃物质量的影响.
开发一种简化方法来评估聚烯废弃物的质量.

主要方法:

在标准化洗和NIR分类后,从S和P系统中分析LDPE,HDPE和PP.
使用了ATR-FTIR光谱学与多变量分析,TGA,DSC和py-GC/MS.
通过实验室规模的挤出,颗粒化,机械测试和融化体积率来研究材料性能.

主要成果:

无论分离系统如何,HDPE材料都表现出良好的质量.
来自P系统的LDPE和PP显示了洗后污染的部分增加.
PP材料表现不佳,在断裂时具有高度可变的延长;S-LDPE含有比P-LDPE更多的杂质.

结论:

塑料废弃物的质量高度依赖于材料类型和收集后处理 (洗,分类).
拟议的多变量FTIR方法提供了一种简化方法来评估聚烯废弃物的质量.
进一步的研究可以建立在这种FTIR评估方法的基础上,以加强塑料回收的质量控制.

关键词:

在ATR-FTIR中使用.美国国家安全委员会 DSC.这就是MVR的MVR.机械回收机械回收机械回收多变量分析多变量分析.塑料包装废弃物塑料包装废弃物聚烯是一种多烯.在源隔离后进行分离.热解-GC/MS/MS 热解-GC/MS 热解源分离源分离源分离在TGA上,TGA就是TGA.拉力测试拉力测试拉力测试

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