Upgrading mixed plastic waste through industrial symbiosis: pseudoductile regenerated cellulose fiber-reinforced shredder residue composites
Author(s)
Singkronart, Kanjanawadee
Sun, Jiayi Amy
Shamsuddin, Siti Ros
Lee, Koon-Yang
Type
Journal Article
Abstract
The mechanical performance of mixed plastic waste from shredder residue is hindered by brittleness and catastrophic failure, limiting its potential applications. In this study, the mechanical properties of mixed plastic is enhanced by reinforcement with rayon fibers through a wet powder impregnation process to leverage the fiber's ductility and entanglement. However, mixed plastic remains poorly dispersed in water during the composite manufacturing, resulting in poorly consolidated composite, which further deteriorates the mechanical properties of mixed plastic from 1.5% strain-at-break to 0.7%. To address this issue, the addition of sodium dodecyl sulfate (SDS) surfactant is explored, where the optimal concentration is found beyond the critical micelle concentration at 10 mM. Lowering the surface tension of water and the adsorption of the SDS on the mixed plastic powder surface facilitated homogeneous dispersion of mixed plastic particles, resulting in well-consolidated rayon fiber-reinforced composites. The 30 wt % rayon fiber-reinforced mixed plastic composite prepared with SDS demonstrated a progressive failure behavior, exhibiting a strain-at-break of 8% and a remarkable 350% increase in impact strength compared to unreinforced mixed plastic. This approach provides a platform to overcome the inherent limitations of mixed plastic waste, offering waste-derived plastic alternatives and reducing the need for fossil-derived virgin materials for a wide range of noncritical applications.
Date Issued
2024-12-13
Date Acceptance
2024-11-06
Citation
ACS Applied Polymer Materials, 2024, 6 (23), pp.14598-14607
ISSN
2637-6105
Publisher
American Chemical Society
Start Page
14598
End Page
14607
Journal / Book Title
ACS Applied Polymer Materials
Volume
6
Issue
23
Copyright Statement
© 2024 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0 .
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/39697845
Subjects
Materials Science
Materials Science, Multidisciplinary
Physical Sciences
plasticwaste
Polymer Science
Rayon fiber
recycling
ROUTE
Science & Technology
Technology
waste reinforced waste composite
wet powder impregnation
Publication Status
Published
Coverage Spatial
United States
Date Publish Online
2024-11-18