高密度聚乙烯
低密度聚乙烯
聚丙烯
聚乙烯
材料科学
聚苯乙烯
聚合物
傅里叶变换红外光谱
复合材料
聚对苯二甲酸乙二醇酯
分析化学(期刊)
高分子化学
化学
化学工程
色谱法
工程类
作者
Mauro Mecozzi,Marco Pietroletti,Yulia B. Monakhova
标识
DOI:10.1016/j.marpolbul.2016.03.012
摘要
We inserted 190 FTIR spectra of plastic samples in a digital database and submitted it to Independent Component Analysis (ICA) to extract the "pure" plastic polymers present. These identified plastics were polypropylene (PP), high density polyethylene (HDPE), low density polyethylene (LDPE), high density polyethylene terephthalate (HDPET), low density polyethylene terephthalate (LDPET), polystyrene (PS), Nylon (NL), polyethylene oxide (OPE), and Teflon (TEF) and they were used to establish the similarity with unknown plastics using the correlation coefficient (r), and the crosscorrelation function (CC). For samples with r<0.8 we determined the Mahalanobis Distance (MD) as additional tool of identification. For instance, for the four plastic fragments found in the Carretta carretta, one plastic sample was assigned to OPE due to its r=0.87; for all the other three plastic samples, due to the r values ranging between 0.83 and0.70, the support of MD suggested LDPET and OPE as co-polymer constituents.
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