A lysine-derived flame retardant for improved flame retardancy, crystallinity, and aqueous-phase degradation of polylactide
Article
Yao, Miaohong, Liu, Linghui, Ma, Changchang, Zhang, Huan, Zhang, Yan, Song, Ruiyin, Fang, Zhengping and Song, Pingan. 2023. "A lysine-derived flame retardant for improved flame retardancy, crystallinity, and aqueous-phase degradation of polylactide." Chemical Engineering Journal. 462. https://doi.org/10.1016/j.cej.2023.142189
Article Title | A lysine-derived flame retardant for improved flame retardancy, crystallinity, and aqueous-phase degradation of polylactide |
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ERA Journal ID | 3854 |
Article Category | Article |
Authors | Yao, Miaohong, Liu, Linghui, Ma, Changchang, Zhang, Huan, Zhang, Yan, Song, Ruiyin, Fang, Zhengping and Song, Pingan |
Journal Title | Chemical Engineering Journal |
Journal Citation | 462 |
Article Number | 142189 |
Number of Pages | 12 |
Year | 2023 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 1385-8947 |
1873-3212 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.cej.2023.142189 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1385894723009208 |
Abstract | Polylactide (PLA) as one of the excellent representative bioplastics had attracted attention worldwide. However, high flammability and poor crystallization behavior of PLA limit its further application. Moreover, the aqueous degradation rate of the pure PLA has been reported extremely low in natural environment (e.g. in water or soil). To solve these problems, the bio-based flame retardant DL was designed and prepared in water phase without any organic solvent by using lysine (Lys), derived from animals and beans, and diethylenetriamine penta-(methylenephosphonic) acid (DTPMPA), a non-toxic scale inhibitor for water treatment, as raw materials. The combination of the flame retardant DL and polyethylene glycol (PEG) endowed PLA with UL94 V-0 rating and limited oxygen index (LOI) value of 29.4%. The crystallinity degree of PLA with 4 wt% PEG and 6 wt% DL were improved to 39.0%. Moreover, the aqueous degradation of PLA in the purified water at the ambient temperature was accelerated by the addition of DL and PEG, manifested by the 38% decrease in Mw of PLA. It is interested in the analysis of the degradation solution that the release of the oligomers of degraded PLA and the flame retardant DL was found during the aqueous degradation process, which further clarified the degradation mechanism. |
Keywords | Crystallinity; Polylactide; Flame retardancy ; Hydrolytic degradation ; Green synthesis |
ANZSRC Field of Research 2020 | 340503. Organic chemical synthesis |
401602. Composite and hybrid materials | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | NingboTech University, China |
Zhejiang University, Hangzhou, China | |
Zhejiang Engineering Research Center for Intelligent Marine Ranch Equipment, China | |
Centre for Future Materials | |
School of Agriculture and Environmental Science |
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