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在机械回收过程中实时分析塑料融排放量,采用SIFT-MS方法

Felix Mehrens¹, Niklas Rode¹, Jacek Lecinski¹

¹IKK - Institute of Plastics and Circular Economy, Leibniz University Hanover, An der Universität 2, 30823 Garbsen, Germany.

|January 1, 2026

概括

选择性离子流管质谱 (SIFT-MS) 能够实时分析回收塑料中的挥发性有机化合物 (VOC). 这项技术通过在挤出过程中检测污染物来改善敏感应用的质量控制.

科学领域:

聚合物科学聚合物科学
分析化学分析化学
工艺工程的过程工程.

背景情况:

回收塑料的质量受到添加剂,迁移或降解的挥发性有机化合物 (VOC) 的影响.
由于塑料污染,食品包装和汽车内饰等高化学要求的应用面临挑战.
现有的分析方法依赖于随机抽样,有可能在不均的材料中检测出有害物质.

研究的目的:

评估选择性离子流管质谱法 (SIFT-MS) 用于在塑料挤出过程中对挥发性有机物进行连续的直线分析.
评估SIFT-MS在挤出过程中实时识别和量化VOC的能力.
为了确定输入材料中的VOC含量与气体流量度之间的相关性.

主要方法:

利用精选离子流管质谱仪 (SIFT-MS) 进行实时气流分析.
在挤出过程中采用双螺丝挤出机与真空圆顶进行样本采集.
识别和量化了各种挥发性有机物,包括烯和符合FDA的模型物质.

主要成果:

在挤出过程中实时清晰识别和量化各种VOC.
在输入材料中的VOC水平和检测到的气体流量度之间显示出强烈的相关性.
从输入材料中成功检测到VOC,包括利蒙和FDA模型物质.

结论:

在机械塑料加工中,SIFT-MS适用于连续的直线VOC分析.
该技术为加强工艺监测和质量控制提供了潜力,特别是在回收材料方面.
在敏感应用中,SIFT-MS可以提高回收塑料的安全性和可追溯性.

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