How the chemical structure of phosphoramides affect the fire retardancy and mechanical properties of polylactide?

Xue, Yijiao; Zhang, Tianchen; Tian, Linfeng; Feng, Jiabing; Song, Fei; Pan, Zheng; Huang, Guobo; Zhang, Meng; Zhou, Yonghong; Song, Pingan

doi:10.1016/j.ijbiomac.2024.130790

Cited by 5 publications

(2 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…11 Generally, large loading amounts are required for the traditional small molecule phosphorus flame retardant; however, this can be solved to a certain extent through the preparation of macromolecular or hyperbranched phosphorus flame retardants or reactive phosphorus flame retardants. 12,13 In order to solve the environmental problems of traditional flame retardants, bio-based and recyclable phosphorus flame retardants have become the focus of research in recent years. 14−16 Many "green" bio-based phosphorus flame retardants such as self-assembled ammonium polyphosphates (APP)/chitosan (CS)/carboxylated silicone oil (Si-COOH/ Si), 17 phytic acid (PA) and taurine (TA) compounds, 18 PA@ chitosan microsphere (CHTM) compounds, 19 phosphorylation CS, 20 arginine (AR)−phytic acid (PA) compounds, 21 phosphorylated modified cellulose fibers, 23 and bio-derived oligomeric polyphosphate.…”

Section: Introductionmentioning

confidence: 99%

“…The study showed that 5.0 wt % melamine (MEL) and 25.0 wt % ammonium polyphosphate (APP) reduced the HRR of the composite by 69.0% and found that MEL and APP had a synergistic flame-retardant effect . Generally, large loading amounts are required for the traditional small molecule phosphorus flame retardant; however, this can be solved to a certain extent through the preparation of macromolecular or hyperbranched phosphorus flame retardants or reactive phosphorus flame retardants. , …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Functionalized Soybean Oil as a Bio-based Flame Retardant for Poly(lactic acid): Role of Phosphorus Content

Zhao,

Li,

Xie

et al. 2024

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

Bio-based phosphorus flame retardants offer significant promise in enhancing the flame retardancy of bioplastics without compromising their environmental friendliness. In this study, a bio-based phosphorus-based flame retardant (PFR) synthesized from epoxidized soybean oil polyol (PESO) was used to enhance the flame-retardant properties of poly(lactic acid) (PLA), aiming to establish the correlation between phosphorus content and the fire behavior of PLA composites. Notably, the study determined that the critical phosphorus content value for improving the PLA rating from NR to V-0 was as low as 0.1 wt % in the composites, with the limited oxygen index (LOI) of PLA increasing from 21.0% to 25.2%. Meanwhile, the introduction of PESO with high phosphorus contents decreased the peak heat release rate (PHRR) and total heat release (THR) of PLA by 5.33% and 9.66%, respectively. Nevertheless, with the complete replacement of the epoxy group by phosphorus ring-opening, PESO loses its plasticizing effect, making it challenging to enhance the elongation at the break of PLA. Finally, the flame-retardant mechanism of PLA/PESO composites was comprehensively analyzed. It was found that the mechanism was also related to the phosphorus contents; high phosphorus was not favorable for the char forming in the condensed phase but promoting the melt dripping and formation of PO • , PO 2• , and HPO • which could trap radicals in the gas phase. This study provides valuable insights into designing PFRs from renewable resources for PLA.

show abstract