A tough, biodegradable and water-resistant plastic alternative from coconut husk

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A tough, biodegradable and water-resistant plastic alternative from coconut husk
Title:
A tough, biodegradable and water-resistant plastic alternative from coconut husk
Journal Title:
Composites Part B: Engineering
Publication Date:
06 June 2022
Citation:
Leow, Y., Sequerah, V., Tan, Y. C., Yu, Y., Peterson, E. C., Jiang, C., Zhang, Z., Yang, L., Loh, X. J., & Kai, D. (2022). A tough, biodegradable and water-resistant plastic alternative from coconut husk. Composites Part B: Engineering, 241, 110031. https://doi.org/10.1016/j.compositesb.2022.110031
Abstract:
Bioplastics from lignocellulosic biomass have gained great interests due to its renewable nature and biodegradability. However, poor mechanical performance and water stability limit their practical applications. Plastic resins are normally required to bond the biomass compounds. In this work, a high-performance bioplastic from coconut husk is developed via a simple top-down and resin-free approach; coconut husk fragments are directly processed into bioplastics through the partial removal of lignin, followed by hot-pressing. By optimization of delignification conditions, the generated bioplastics achieve a tensile Young's modulus of 2.1 ± 0.4 GPa and a tensile strength of 22.8 ± 4.4 MPa. More importantly, these bioplastics show excellent water stability (up to 28 days of soaking) and decent microbial biodegradability. Furthermore, the potential use of the bioplastics is demonstrated as solid planar substrates for miniaturized, disposable electrochemical biosensors. This work provides a promising and green approach to prepare strong, wet-stable, and biodegradable lignocellulosic bioplastic as a potential solution to replace petroleum-based plastics.
License type:
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Funding Info:
This research / project is supported by the A*STAR - Career Development Award
Grant Reference no. : CDA202D800033

This research / project is supported by the A*STAR - AME Programmatic Funds
Grant Reference no. : A18A1b0045
Description:
ISSN:
1359-8368
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