Open AccessInvestigation of fluorescence spectra of various types of plastics for the purpose of sorting and further processing
Author(s) -
N. A. Maslov,
В. М. Дулин
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1677/1/012186
Subject(s) - materials science , excitation , polyethylene , polypropylene , excitation wavelength , principal component analysis , fluorescence , polyethylene terephthalate , analytical chemistry (journal) , emission spectrum , spectral line , wavelength , laser , optics , optoelectronics , composite material , chemistry , chromatography , mathematics , physics , astronomy , electrical engineering , engineering , statistics
Excitation-emission matrices of various plastic package samples were studied. A tuneable 210-310 nm laser was used as an excitation source. The samples of polyethylene terephthalate, polypropylene, and high-density polyethylene of various colour and transparency showed multipeak wideband fluorescence spectra dependent on the excitation wavelength. Principal component analysis demonstrated that the excitation-emission matrices of most samples are well described by two principal components, individual for their types and colorant additives. Despite complex structure of the excitation-emission matrices of different types of the plastic, appropriate linear combinations of the principal components allowed finding a characteristic component for each of them.