Quantifying cellulose content in plastic-cellulose material mixtures
Loading...
Access rights
openAccess
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2024-11
Major/Subject
Mcode
Degree programme
Language
en
Pages
9
Series
Cellulose, Volume 31, issue 16, pp. 9613-9621
Abstract
This study investigates the capabilities of various measurement techniques for quantifying the cellulose content in reject material from a carton recycling center, which consists of polyethylene, cellulose, and aluminum, along with impurities. Different measurement techniques, including Fourier Transform Infrared Spectroscopy combined with Attenuated Total Reflectance (FTIR-ATR), cellulose dissolution using cupri-ethylenediamine (CED) from plastic followed by gravimetric analysis, acid hydrolysis combined with chromatography, and Thermal Gravimetric Analysis TGA, are employed in this study. Acid hydrolysis combined with chromatography and TGA shows comparable results when compared to different techniques for analyzing pulper reject. Dissolution with CED showed also comparable results but shows higher variation than TGA or chromatography. FTIR absorbance ratio of 1025/2917 correlates with cellulose content, but it shows high variation and lacks sensitivity below 5% cellulose content in polyethylene. This limitation is attributed to factors such as the limited measurement area (1.8 mm) and the large particle size of the cellulose and LDPE mixtures, possibly caused by inadequate grinding of LDPE. In conclusion, TGA and acid hydrolysis combined with chromatography are the most reliable for quantifying cellulose content in recycling reject, providing more consistent and accurate results than FTIR-ATR or CED dissolution methods.Description
Publisher Copyright: © The Author(s) 2024.
Keywords
CED (Cupri-ethylenediamine), FTIR spectroscopy (Fourier Transform Infrared Spectroscopy), HPAEC (High-Performance Anion-Exchange Chromatography), LDPE (low-Density polyethylene), Recycling, TGA (thermogravimetric analysis)
Other note
Citation
Kauppi, E, Niskanen, J, Hiltunen, E & Paltakari, J 2024, ' Quantifying cellulose content in plastic-cellulose material mixtures ', Cellulose, vol. 31, no. 16, pp. 9613-9621 . https://doi.org/10.1007/s10570-024-06187-y