Biomimetic synthesis of a micro/nano-structured basic magnesium carbonate: Green and highly efficient flame-retardant PBAT composite material

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-09-30 DOI:10.1016/j.compositesa.2025.109330

Jiaying Xu , Zhenfeng Cheng , Fuhao Yu , Zhimin Song , Jing Fang , Hao Li , Bibo Wang , Yuan Hu

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引用次数: 0

Abstract

Poly (butylene adipate-co-butylene terephthalate) (PBAT) is a biodegradable and environmentally friendly material. However, due to its flammability and the formation of molten droplets during combustion, green flame retardants need to be added to enhance fire safety while maintaining environmental friendliness. In this work, a rod-shaped magnesium hydroxide carbonate (BMC) was synthesized as a flame retardant and combined with the bio-based phytic acid melamine supramolecular (PM). The micrometer-sized rod-shaped BMC acts as the “corn cob”, while the spherical particles formed by PM supramolecules act as the “corn kernels”. They are structurally locked together through acid-base neutralization, forming a unique “corn-like” hetero-sized assembly structure (PMBMC). When 20 wt% PMBMC is added to PBAT, the composite material passes the UL-94 test and the LOI reaches 28.8 %. Meanwhile, it can reduce PHRR, THR, and MARHE by 82.9 %, 12.2 %, and 69.1 %. Additionally, SP, CO₂P, and COP are reduced by 92.7 %, 81.3 %, and 82.6 %, respectively. Moreover, compared with the unmodified flame retardant, the Eb and Ts of PBAT/PMBMC increase by 13.6 %, and 51.6 % due to the hydrogen bond. In conclusion, this study provides a new idea for the development of efficient and environmentally friendly PBAT green material flame retardant and smoke suppressant by using natural bio-based materials.

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微纳米结构碱式碳酸镁的仿生合成：绿色高效阻燃PBAT复合材料

聚己二酸丁烯-对苯二甲酸丁二酯（PBAT）是一种可生物降解的环保材料。但由于其可燃性和在燃烧过程中形成熔滴，需要添加绿色阻燃剂，在保持环境友好的同时提高防火安全性。本研究合成了一种棒状氢氧化镁（BMC）作为阻燃剂，并与生物基植酸三聚氰胺超分子（PM）结合。微米大小的棒状BMC充当“玉米芯”，而PM超分子形成的球形颗粒充当“玉米粒”。它们通过酸碱中和作用在结构上锁定在一起，形成独特的“玉米状”异尺寸组装结构（PMBMC）。在PBAT中加入20 wt%的PMBMC，复合材料通过UL-94测试，LOI达到28.8%。同时可使PHRR、THR和MARHE分别降低82.9%、12.2%和69.1%。此外，SP、CO2P和COP分别降低了92.7%、81.3%和82.6%。与未改性阻燃剂相比，由于氢键的作用，PBAT/PMBMC的Eb和Ts分别提高了13.6%和51.6%。综上所述，本研究为利用天然生物基材料开发高效环保的PBAT绿色材料阻燃抑烟剂提供了新的思路。

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.