Superior sequence-controlled poly(L-lactide)-based bioplastic with tunable seawater biodegradation

He, Manjie; Hsu, Yu I.; Uyama, Hiroshi

Journal of Hazardous Materials, 2024, 474, 134819

Number of Access:541（2025-12-04 02:43 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/97652

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Title
Superior sequence-controlled poly(L-lactide)-based bioplastic with tunable seawater biodegradation
Creator
CreatorName
He, Manjie
NRID
1000010757678 1000010757678
ORCID
0000-0002-4533-7200 0000-0002-4533-7200
researchmap permalink
yuihsu yuihsu
Scopus Author ID
55389981500 55389981500
CreatorName
Hsu, Yu I.
NRID
1000070203594 1000070203594
researchmap permalink
read0168389 read0168389
Scopus Author ID
7102108908 7102108908
ORCID
0000-0002-8587-2507 0000-0002-8587-2507
CreatorName
Uyama, Hiroshi
Subject
BOD analysis
Degradation mechanism
PLA-based bioplastics
Tunable seawater biodegradability
Description
He M., Hsu Y.I., Uyama H.. Superior sequence-controlled poly(L-lactide)-based bioplastic with tunable seawater biodegradation. Journal of Hazardous Materials 474, 134819 (2024); https://doi.org/10.1016/j.jhazmat.2024.134819.
Abstract
Developing superior-performance marine-biodegradable plastics remains a critical challenge in mitigating marine plastic pollution. Commercially available biodegradable polymers, such as poly(L-lactide) (PLA), undergo slow degradation in complex marine environments. This study introduces an innovative bioplastic design that employs a facile ring-opening and coupling reaction to incorporate hydrophilic polyethylene glycol (PEG) into PLA, yielding PEG-PLA copolymers with either sequence-controlled alternating or random structures. These materials exhibit exceptional toughness in both wet and dry states, with an elongation at break of 1446.8% in the wet state. Specifically, PEG4kPLA2k copolymer biodegraded rapidly in proteinase K enzymatic solutions and had a significant weight loss of 71.5% after 28 d in seawater. The degradation primarily affects the PLA segments within the PEG-PLA copolymer, as evidenced by structural changes confirmed through comprehensive characterization techniques. The seawater biodegradability, in line with the Organization for Economic Cooperation and Development 306 Marine biodegradation test guideline, reached 72.63%, verified by quantitative biochemical oxygen demand analysis, demonstrating rapid chain scission in marine environments. The capacity of PEG-PLA bioplastic to withstand DI water and rapidly biodegrade in seawater makes it a promising candidate for preventing marine plastic pollution.
Publisher
Elsevier B.V.
Source Title
Journal of Hazardous Materials
Volume (Issue)
474
Page
134819
Date of Issued
2024-08-05
Language
English
Handle URL
https://hdl.handle.net/11094/97652
PISSN
03043894
eISSN
18733336
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.jhazmat.2024.134819
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article