Imaging Fluorescence Measurements of Black Plastic Particles Measured With 450 nm Excitation and a Demonstrator System

The data contains imaging fluorescence measurements of black plastic particles in the spectral range from 500 nm to 900 nm. The files are stored in the envi-format used typically for hyperspectral data. Therefore there are two files for each measurement: the data (.envi) and the header-file (.envi.hdr). The files can be opened with software like ENVI or the Imanto<i>viewer </i>(https://www.iws.fraunhofer.de/de/geschaeftsfelder/chemische_oberflaechentechnik/prozess_monitoring/produkte/imanto.html). The measurements were made with a demonstrator system developed for imaging fluorescence measurements in an industrial like environment. For excitation four 4000 mW 450 nm diode laser covering a length of 40 cm were used. The samples were also illuminated with a 870 nm LED. For each polymer several thousand particles were measured. For the measurements the plastic particles were placed on a conveyer belt and measured with the hyperspectral scanning system. Three measurements were carried out per polymer.The measured polymers are HDPE, PP, SBR, PA6, PA6 with glassfiber, PA66, PA66 with glass fibre, PA66 with flame retarder, TPU, TPE, TEEE, PPS, PBT and POM. The samples were obtained from a recycling plant and the plastic was grinded cryogenically at the plant.The data was used to train classification models. The objective is to use the method for recycling black plastics.<br><br>