Synthesis of novel EDPP for inflaming retarding PLLA

Sun, Qihao; Wang, Yanhe; Wei, Junge; Shen, Yueshi; Chen, Xing; Zhang, Baochang; Song, Xiaofeng

doi:10.1016/j.polymdegradstab.2021.109533

Cited by 10 publications

(2 citation statements)

References 33 publications

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“…As is well-known, the addition of flame retardants (FRs) is the most convenient and economical method to improve flame retardancy of PLA. Considering the impact on the environment, various halogen-free FRs have been investigated to improve the flame retardancy of PLA. − Among them, phosphorus-containing FRs have attracted wide attention due to environmentally friendly and efficient advantages. − Zhao et al successfully fabricated a modified ammonium polyphosphate (MAPP) with hierarchical micronanostructures . The addition of 5 wt % MAPP endowed PLA composite with UL-94 V-0 grade and improved material toughness .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Flame Retardancy, Ultraviolet Shielding, and Preserved Mechanical Properties of Polylactic Acid with Fully Biobased Multifunctional Additives by a Green Method

Zhong,

Xu,

Niu

et al. 2024

ACS Sustainable Chem. Eng.

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Flammability, slow nucleation rates, and poor UV-shielding limit the widespread use of the bioplastic polylactic acid (PLA). Traditional functional additives usually have the disadvantages of complicated synthesis process, environmental unfriendliness, single function, etc., and after blending with PLA, it will also lead to the degradation of mechanical properties. In this work, fully biobased multifunctional additives (PN) were prepared by a simple and green aqueous phase electrostatic self-assembly method using biobased phytic acid and nicotinamide as monomers. Incorporation of only 2 wt % PN endowed PLA with the limiting oxygen index of 29.0% and the UL-94 rating of V-0, meeting the standard for flame-retardant materials. Flame-retardant mechanisms of PLA/PN composites were mainly gas phase. In addition, the UV protection factor value of PLA was increased to 90.8, showing good UV shielding ability. It was noteworthy that the incorporation of PN increased the nucleation density of PLA, thus maintaining better mechanical properties of PLA. Therefore, this work provides a green and efficient method for the large-scale preparation of fully biobased multifunctional additives, which is expected to expand the application areas of PLA.

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Section: Introductionmentioning

confidence: 99%

Enhanced Flame Retardancy, Ultraviolet Shielding, and Preserved Mechanical Properties of Polylactic Acid with Fully Biobased Multifunctional Additives by a Green Method

Zhong,

Xu,

Niu

et al. 2024

ACS Sustainable Chem. Eng.

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show abstract

“…The blending method is convenience, e ciency, low-cost and easy to be processed. However, many ame retardants have poor dispersibility and weak compatibility in matrix materials, leading to signi cant deterioration of mechanical properties [2][3][4][5]. Besides, the ame retardant is easy to leach during processing, resulting in the reduction of ame retardancy [6,7].…”

Section: Introductionmentioning

confidence: 99%

A strategy to achieve the inherently flame-retardant PA56 by copolymerization with DDP

Yang

Gao

Liu³

et al. 2022

Preprint

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As a bio-based polyamide, PA56 is restricted in many fileds due to its flammability. In this research, flame-retardant PA56 copolymers (FRPA56s) were designed and successfully synthesized with the introduction of 9,10-dihydro-10-[2,3-di(hydroxy carbonyl)propyl]-10-phosphaphenanthrene-10-oxide (DDP) unit. The thermal properties, thermal degradation and flame behavior of the resultant copolymer were investigated by DSC, TGA, LOI, UL-94 and cone calorimeter tests, respectively. Compared to PA56, the peak value of heat release rate and total heat release of FRPA56 containing 1.2 mol% DDP decrease by 35 % and 19 %, respectively, indicating the high flame-retardant efficiency of DDP. It is also found that FRPA56 with only 1.0 mol% DDP passes V-0 grade in the UL-94 test while its thermal performance is almost the same as homopolymer PA56. The pyrolysis products in both the condensed and gas phases were further systematically analyzed by SEM, Raman, X-ray photoelectron spectroscopy and TGA-GC/MS. The flame-retardant mechanism was also proposed for FRPA56s.

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A Strategy to Achieve the Inherently Flame-retardant PA56 by Copolymerization with DDP

et al. 2022

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Synthesis of novel EDPP for inflaming retarding PLLA

Cited by 10 publications

References 33 publications

Enhanced Flame Retardancy, Ultraviolet Shielding, and Preserved Mechanical Properties of Polylactic Acid with Fully Biobased Multifunctional Additives by a Green Method

Enhanced Flame Retardancy, Ultraviolet Shielding, and Preserved Mechanical Properties of Polylactic Acid with Fully Biobased Multifunctional Additives by a Green Method

A strategy to achieve the inherently flame-retardant PA56 by copolymerization with DDP

A Strategy to Achieve the Inherently Flame-retardant PA56 by Copolymerization with DDP

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