Flame Retardancy and Toughness of Poly(Lactic Acid)/GNR/SiAHP Composites

Wu, Ningjing; Yu, Jihang; Lang, Wenchao; Ma, Xiuquan; Yang, Yue

doi:10.3390/polym11071129

Cited by 19 publications

(9 citation statements)

References 37 publications

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“…In another investigation [ 301 ], a novel flame retardant and toughened bio-based (PLA)/glycidyl methacrylate-grafted natural rubber (GNR) composite was reported. The interfacial compatibility between PLA/GNR matrix and the charring ability of the PLA/GNR/SiAHP composites as well as the modified aluminum hypophosphite by silane (SiAHP) was enhanced to a certain extent due to the surface modification of AHP.…”

Section: Trends Of Pla and Phas Applicationsmentioning

confidence: 99%

“…The promising flame retardancy of the PLA/GNR/SiAHP composites was suggested to be due to the synergistic effect including condensed and gaseous phase flame-retardant mechanisms. High-performance flame-retardant PLA/GNR/SiAHP composites have great potential applications as alternatives to petroleum-based polymers in the building and automotive interior sectors [ 301 ].…”

Section: Trends Of Pla and Phas Applicationsmentioning

confidence: 99%

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Expanding Poly(lactic acid) (PLA) and Polyhydroxyalkanoates (PHAs) Applications: A Review on Modifications and Effects

et al. 2021

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The high price of petroleum, overconsumption of plastic products, recent climate change regulations, the lack of landfill spaces in addition to the ever-growing population are considered the driving forces for introducing sustainable biodegradable solutions for greener environment. Due to the harmful impact of petroleum waste plastics on human health, environment and ecosystems, societies have been moving towards the adoption of biodegradable natural based polymers whose conversion and consumption are environmentally friendly. Therefore, biodegradable biobased polymers such as poly(lactic acid) (PLA) and polyhydroxyalkanoates (PHAs) have gained a significant amount of attention in recent years. Nonetheless, some of the vital limitations to the broader use of these biopolymers are that they are less flexible and have less impact resistance when compared to petroleum-based plastics (e.g., polypropylene (PP), high-density polyethylene (HDPE) and polystyrene (PS)). Recent advances have shown that with appropriate modification methods—plasticizers and fillers, polymer blends and nanocomposites, such limitations of both polymers can be overcome. This work is meant to widen the applicability of both polymers by reviewing the available materials on these methods and their impacts with a focus on the mechanical properties. This literature investigation leads to the conclusion that both PLA and PHAs show strong candidacy in expanding their utilizations to potentially substitute petroleum-based plastics in various applications, including but not limited to, food, active packaging, surgical implants, dental, drug delivery, biomedical as well as antistatic and flame retardants applications.

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Section: Trends Of Pla and Phas Applicationsmentioning

confidence: 99%

Section: Trends Of Pla and Phas Applicationsmentioning

confidence: 99%

Expanding Poly(lactic acid) (PLA) and Polyhydroxyalkanoates (PHAs) Applications: A Review on Modifications and Effects

et al. 2021

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“…In addition, as a small molecule relative to PLA, PAPh occupied the space between the PLA chain, thereby reducing the energy required for molecular movement. [ 43 ] The multiple phenyl groups in PAPh promoted the accumulation of PLA segment at low temperatures to form an ordered crystalline structure. [ 44 ] However, with the increase of PAPh, partial aggregation was observed between PAPh and decreased the crystallinity of PLA.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of phytic acid‐based compounds for improving the mechanical properties and fire performances of poly(lactic acid)

Yang

Song

Wang

et al. 2022

Vinyl Additive Technology

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Bio-based phytic acid is a nontoxic naturally occurring compound and has the potential for use in polymers for flame retardancy due to its high phosphorus content. In this work, two novel phytic acid-based compounds, phytyl octyl glycidyl ether (PAOc) and phytyl phenyl glycidyl ether (PAPh), were prepared through the addition esterification of 2-ethylhexyl glycidyl ether and phenyl glycidyl ether with phytic acid. The chemical structure of PAOc and PAPh were confirmed by 1 H NMR, 31 P NMR, and FTIR spectra. The mechanical, thermal, and fire performances of the PLA/PAOc and PLA/PAPh blends were investigated by various tests including mechanical, thermal (DSC, TGA), morphological (SEM), and flammability (LOI, UL-94). The results showed that the addition of PAOc and PAPh improved the thermal stability of PLA through hydrogen bonding. PAPh was more effective to improving the mechanical properties and crystalline properties of PLA than PAOc. When PAPh was 5 wt %, the elongation at break of PLA increased from 2.9% to 16.7%, the tensile strength increased from 32 to 37 MPa, and the crystallinity increased from 30.6% to 36.7%. Moreover, introduction of phenyl group was beneficial to phytic acid improving the flame retardant properties of PLA. At an addition level of 10 wt%, the LOI of PLA/PAPh reached 27.5% and achieved UL-94-V0 rating while improving the mechanical properties.

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“…Attempts have been made to simultaneously improve the toughness and flame retardancy of PLA by using a combination of a toughening agent such as poly (ethylene glycol) (PEG) and a flame retardant, taking APP for an example. [20][21][22][23] It has also been reported that a multifunctional additive was applied to concurrently improve the toughness and flame retardancy of PLA. For example, Zhang et al synthesized a multifunctional biobased flame retardant/graphene oxide hybrid (GOH) for PLA, the addition of 10 wt% of GOH enables PLA to achieve a desirable UL-94 V-0 rating, however, the elongation at break increased by only five times.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, high‐performance PLA composites with an integrated toughness and flame retardancy is highly desirable. Attempts have been made to simultaneously improve the toughness and flame retardancy of PLA by using a combination of a toughening agent such as poly (ethylene glycol) (PEG) and a flame retardant, taking APP for an example 20–23 . It has also been reported that a multifunctional additive was applied to concurrently improve the toughness and flame retardancy of PLA.…”

Section: Introductionmentioning

confidence: 99%

Improving the toughness and flame retardancy of poly (lactic acid) with phosphorus‐containing core‐shell particles

Dong

Wang

et al. 2022

J of Applied Polymer Sci

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Despite polylactide (PLA) representing one of the most promising biodegradable materials, its applications lag far behind owing to the disadvantages of inherent brittleness and flammability, which is challengeable to simultaneously overcome.In this work, a phosphorus-containing core-shell starch nanoparticle (FR-CSS) was synthesized via soap-free emulsion polymerization for concurrent improvement of toughness and flame retardancy of PLA. The results revealed that with the incorporation of 10 wt% FR-CSS, the elongation at break of PLA/10FR-CSS was prominently improved to 308% while the tensile strength was about 40.0 MPa. Particularly, the toughness of PLA/FR-CSS was as high as 108.2 MJ/m 3 , which was 48 times higher than that of neat PLA. Besides, the PLA/10FR-CSS exhibited improved flame retardancy with a UL-94 V-2 rating and a LOI value of 24.5%. These results established an integrated design strategy of incorporating phosphorus-containing core-shell nanoparticles to prepare PLA composites combined excellent toughness with enhanced flame retardancy, therefore broadening the application gallery of PLAs.

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Flame Retardancy and Toughness of Poly(Lactic Acid)/GNR/SiAHP Composites

Cited by 19 publications

References 37 publications

Expanding Poly(lactic acid) (PLA) and Polyhydroxyalkanoates (PHAs) Applications: A Review on Modifications and Effects

Expanding Poly(lactic acid) (PLA) and Polyhydroxyalkanoates (PHAs) Applications: A Review on Modifications and Effects

Synthesis of phytic acid‐based compounds for improving the mechanical properties and fire performances of poly(lactic acid)

Improving the toughness and flame retardancy of poly (lactic acid) with phosphorus‐containing core‐shell particles

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