Publisher DOI: 10.1016/j.wasman.2018.10.010
Title: Assessment of plastic waste materials degradation through near infrared spectroscopy
Language: English
Authors: Alassali, Ayah 
Fiore, Silvia 
Kuchta, Kerstin 
Keywords: Ageing;Degradation;Model;Plastic;Recyclability;Waste
Issue Date: Dec-2018
Source: Waste management (New York, N.Y.) (82): 71-81 (2018-12)
Journal or Series Name: Waste management 
Abstract (english): Plastic waste is a relevant challenge for waste management sector and further technological means have to be urgently researched. The evaluation of plastic waste quality through non-destructive, cost-effective and mature technologies could be without any doubt a key issue. This study is aimed at the assessment of Near Infrared (NIR) spectroscopy for the generation of global degradation-prediction models able to forecast plastic ageing. The degradation of Polyethylene terephthalate (PET), Acrylonitrile Butadiene Styrene (ABS), Polypropylene (PP) and Polyethylene (PE) was achieved by thermal ageing (at 85 °C, 105 °C and 120 °C and durations ranging from 4 to 504 h), to simulate environmental outdoor conditions. Experimental data obtained for each plastic material were elaborated through partial least square (PLS) regression to obtain empirical models. For all inspected plastic materials, a good correspondence between the variation in absorbance units and the change in chemical bonds vibrations was observed. The PLS models were afterwards calibrated (taking into account the different ageing conditions; first separately then including the ageing factors combined). A high accuracy (R2 equal to 0.85-1.00) was observed in predicting ageing for PET and ABS, while the correspondence showed a 30% decrease for PE and PP. This study proves that NIR spectroscopy can be recommended as an effective tool to investigate plastics degradation, with some limitations for specific polymers that need further investigations.
URI: http://hdl.handle.net/11420/2399
ISSN: 0956-053X
Institute: Umwelttechnik und Energiewirtschaft V-9 
Type: Sonstiges
Appears in Collections:Publications without fulltext

Show full item record

Page view(s)

19
Last Week
5
Last month
checked on May 26, 2019

Google ScholarTM

Check

Export

Items in TORE are protected by copyright, with all rights reserved, unless otherwise indicated.