期刊
VIBRATIONAL SPECTROSCOPY
卷 118, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.vibspec.2021.103329
关键词
Plastic identification; Hyperspectral imaging; Plastic recycling; Principal component analysis
资金
- (Ministry of Higher Education and Science) [8101-00015B]
- Smart Industry (European Regional Development Fund)
- (Region Midtjylland) [RFM-17-0020]
- Innovation Fund Denmark [0177-00035A]
- Newtec
In this study, unsupervised machine learning was applied to classify plastics, successfully distinguishing between twelve types of plastics. The practicality of the model was further demonstrated by correctly identifying three unknown samples.
An increase in the quality of recycled plastic is paramount to address the global plastic challenge and applicability of recycled plastics. A potent approach is mechanical plastic sorting but sufficient analytical techniques are needed. This study applies unsupervised machine learning on short wave infrared hyperspectral data to build a model for classification of plastics. The model can successfully distinguish between twelve plastics (PE, PP, PET, PS, PVC, PVDF, POM, PEEK, ABS, PMMA, PC, and PA12) and the utility is further proven by recognizing three unknown samples (PS, PMMA, PC). The experimental setup is constructed similar to an in-line industrial setup, and the machine learning is optimized for minimal data processing. This ensures the industrial relevance and is a stepping-stone to solve the global plastic challenge.
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