Fabrication of green lignin-based flame retardants for enhancing the thermal and fire retardancy properties of polypropylene/wood composites
Article
Article Title | Fabrication of green lignin-based flame retardants for enhancing the thermal and fire retardancy properties of polypropylene/wood composites |
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ERA Journal ID | 200101 |
Article Category | Article |
Authors | Liu, Lina (Author), Qian, Mengbo (Author), Song, Ping'an (Author), Huang, Guobo (Author), Yu, Youming (Author) and Fu, Shenyuan (Author) |
Journal Title | ACS Sustainable Chemistry and Engineering |
Journal Citation | 4 (4), pp. 2422-2431 |
Number of Pages | 10 |
Year | 2016 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 2168-0485 |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acssuschemeng.6b00112 |
Web Address (URL) | http://pubs.acs.org/doi/abs/10.1021/acssuschemeng.6b00112 |
Abstract | Abstract: Despite growing extensive applications, until now the poor thermal stability and flame retardancy properties of wood-plastic composites (WPC) remain effectively unsolved. Meanwhile, industrial lignin has emerged as a potential component for polymer composites due to many advantages including abundance, rich reactive functional groups, high carbon content and tailored capability for chemical transformations. Herein, we have fabricated one biobased flame retardant based on industrial lignin chemically grafted with phosphorus, nitrogen and copper elements, as the functional additive for the WPC. Compared with unmodified lignin (O-lignin), functionalized lignin (F-lignin) is more effective to improve the thermal stability and flame retardancy of WPC because of presence of the flame retardancy elements (P and N) and the catalytic effect of Cu2+ on the char-formation. The presence of F-lignin not only reduces the heat release rate, total heat release and slows down the combustion process but also decreases total smoke production rate during combustion. The char residue shows that it is the increased char residues and its continuous compact char formed during burning that are responsible for enhanced flame retardancy properties. This work suggests a novel green strategy for improving flame retardancy performance of WPC and promoting the utilization of industrial lignin. |
Keywords | Flame retardancy; Lignin; Thermal properties; Wood-plastic composites (WPC); Chemical transformations; Functional additives; Heat Release Rate (HRR); Polypropylene/wood composites; Reactive functional groups; Smoke production rate; Wood plastic composite; Thermodynamics; Chemical Agents and Basic Industrial Chemicals; Chemical Products Generally; Wood and Wood Products; Cellulose, Lignin and Derivatives; Organic Polymers; Plastics Products |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 340602. Chemical thermodynamics and energetics |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Lanzhou University, China |
Zhejiang A & F University, China | |
Taizhou University, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4122/fabrication-of-green-lignin-based-flame-retardants-for-enhancing-the-thermal-and-fire-retardancy-properties-of-polypropylene-wood-composites
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