A polyphosphoramide-grafted lignin enabled thermostable and fire-retardant polylactide with preserved mechanical properties
Article
Article Title | A polyphosphoramide-grafted lignin enabled thermostable and fire-retardant polylactide with preserved mechanical properties |
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ERA Journal ID | 4882 |
Article Category | Article |
Authors | Liu, Lina, Shi, Bingbing, Zhang, Anlin, Xue, Yijiao, Zhang, Jianzhong, Dai, Jinfeng, Hassanpour, Morteza, Tang, Long-Cheng, Shi, Yongqian and Song, Pingan |
Journal Title | Composites Part A: Applied Science and Manufacturing |
Journal Citation | 160 |
Article Number | 107028 |
Number of Pages | 10 |
Year | Sep 2022 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 1359-835X |
1878-5840 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.compositesa.2022.107028 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1359835X22002147 |
Abstract | It has been desirable to create biodegradable polymer materials that are thermally stable, flame- retardant and mechanically robust. One promising strategy is to develop fire retardant polylactide (PLA) using lignin as inexpensive fillers, but existing functionalized lignin cannot improve the thermal stability of PLA, in addition to unsatisfactory fire retardancy. Herein, we report a lignin-derived fire retardant (LF) by grafting polyphosphoramide into the chemical structure of lignin waste through graft polymerization. The results show that with 8 wt% of LF, the final PLA shows significantly enhanced thermal stability in N2. Moreover, the resulting PLA achieves a satisfactory UL-94 V-0 rating, meeting the demanding requirement of fire retardancy in industries. Additionally, the PLA/LF composite displays increased elastic modulus and well-preserved strength and ductility of pure PLA. This work provides an effective strategy for creating biobased fire retardant additives using industrial lignin waste, and PLA biocomposites which hold great promise for packaging, fabrics, electronic, and automotive applications. |
Keywords | Biocomposite; Thermal properties; Flame retardancy; Mechanical properties |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
401605. Functional materials | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Zhejiang A & F University, China |
Hohai University, China | |
Queensland University of Technology | |
Hangzhou Normal University, China | |
Fuzhou University, China | |
Centre for Future Materials | |
School of Agriculture and Environmental Science |
https://research.usq.edu.au/item/w13q8/a-polyphosphoramide-grafted-lignin-enabled-thermostable-and-fire-retardant-polylactide-with-preserved-mechanical-properties
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