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Quality changes of low-density polyethylene (LDPE) recyclates from the pretreatment process with a cationic surfactant and a nonionic surfactant as cleaning agents upstream of extrusion
Citation Link: https://doi.org/10.15480/882.4673
Publikationstyp
Journal Article
Date Issued
2022-10-24
Sprache
English
TORE-DOI
Journal
Volume
10
Issue
11
Article Number
2174
Citation
Processes 10 (11): 2174 (2022)
Publisher DOI
Scopus ID
Publisher
Multidisciplinary Digital Publishing Institute
Low-density polyethylene is the most applied packaging plastic. The recycling rate of LDPE is low, especially for the material from the post-consumer source. The quality of the LDPE post-consumer recyclates is influenced by different contaminations, either intentionally or non-intentionally. Printing ink is one of the substances that is regarded as having a negative influence on the quality of LDPE recyclates. This study used a new type of nonionic surfactant oxirane, methyl-, polymer for de-inking as a pretreatment. Afterward, the LDPE film flakes were mechanically recycled in the laboratory. A melt flow index (MFI), differential scanning calorimetry (DSC), and tensile strength analysis were carried out. This work reported the de-inking effect of a new type of nonionic surfactant. However, no evidential correlation between the rate of color removal and the improvement in the rheological, thermal, and mechanical properties can be identified from the result of this study.
Subjects
LDPE
surfactant
cleaning
pretreatment
mechanical recycling
DDC Class
600: Technik
620: Ingenieurwissenschaften
Publication version
publishedVersion
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