A molecularly engineered bioderived polyphosphonate containing Schiff base towards fire-retardant PLA with enhanced crystallinity and mechanical properties
Article
Xue, Yijiao, Zhang, Tianchen, Tian, Linfeng, Feng, Jiabing, Song, Fei, Pan, Zheng, Zhang, Meng, Zhou, Yonghong and Song, Pingan. 2023. "A molecularly engineered bioderived polyphosphonate containing Schiff base towards fire-retardant PLA with enhanced crystallinity and mechanical properties." Chemical Engineering Journal. 472. https://doi.org/10.1016/j.cej.2023.144986
Article Title | A molecularly engineered bioderived polyphosphonate containing Schiff base towards fire-retardant PLA with enhanced crystallinity and mechanical properties |
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ERA Journal ID | 3854 |
Article Category | Article |
Authors | Xue, Yijiao, Zhang, Tianchen, Tian, Linfeng, Feng, Jiabing, Song, Fei, Pan, Zheng, Zhang, Meng, Zhou, Yonghong and Song, Pingan |
Journal Title | Chemical Engineering Journal |
Journal Citation | 472 |
Article Number | 144986 |
Number of Pages | 11 |
Year | 2023 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 1385-8947 |
1873-3212 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.cej.2023.144986 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1385894723037178 |
Abstract | To expand the practical application and realize sustainable development, it is urgent to develop advanced polylactide composites with fire retardancy and mechanically strong properties by utilizing bio-derived additives. Unfortunately, such desired performance portfolio is still unsatisfactory due to unclear mechanism and improper design strategy. In this paper, a novel bio-derived polyphosphonate containing Schiff base (PVP) was prepared by a two-step method of condensation and addition reactions. By incorporating only 0.5 wt% PVP, the LOI value of PLA is increased to 32.5 vol% as well as achieving a UL-94 V-0 rating. Such superior fire retardancy is ascribed to the physical barrier effect of char residue, which arising from the cyclization of Schiff base and catalytic carbonization of polyphosphonate. Due to the crosslinking reaction between PLA and PVP and nucleating effect of PVP in the PLA matrix, the mechanical strength of PLA is increased by 10.2% with addition of 1.0 wt% PVP. This study provides a feasible way for designing bio-derived fire retardants to simultaneously improving the fire retardancy and mechanical strength of PLA, thus is expected to expand the practical application of PLA materials. |
Keywords | Bioderived fire retardants; Polylactic acid ; Mechanical strength ; Crystallinity |
ANZSRC Field of Research 2020 | 340302. Macromolecular materials |
401602. Composite and hybrid materials | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Chinese Academy of Forestry, China |
Jiaxing University, China | |
Centre for Future Materials | |
School of Agriculture and Environmental Science |
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