Sustainable polyurethane nanocomposite foam from waste poly(ethylene terephthalate): preparation, thermal stability, and flame retardancy

IF 2.8 4区工程技术 Q2 POLYMER SCIENCE Macromolecular Research Pub Date : 2024-08-07 DOI:10.1007/s13233-024-00304-3

Hai Vothi, VietHien Le, TuyetMinh Nguyen-Ha, DongQuy Hoang

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Abstract

In this work, we proposed and synthesized sustainable nanocomposite polyurethane foam (PUF) derived from waste poly(ethylene terephthalate) (PET), reinforced with nano ZnO and incorporating aluminum hydroxide (ATH) as a flame retardant. Chemical structure of oligodiol obtained from the glycolysis of waste PET by diethylene glycol and ZnSO4.7H2O catalyst under microwave irradiation was confirmed by FTIR and 1H-NMR and continuously product of that was used to prepare PUF nanocomposite material. The density of the PUF decreased from 58 to 35 g/cm3 by the addition of ZnO nanoparticles, which are suitable for lightweight and insulation applications. In addition, the incorporation of ATH is indispensable to enhancing the flame retardancy of the PUF nanocomposites with UL-94 (HB) at 100 php ATH loading and UL-94 (VB) V-0 at 150 php ATH loading, simultaneously enhancing the mechanical properties of PUF/ZnO/ATH nanocomposites. The outcomes not only met the fire safety requisites, light-weight, and high mechanical properties for polymer nanocomposite material applications in construction but also incorporated a substantial proportion of discarded PET bottles sourced from associated industries.

Graphic abstract

The PUF nanocomposite foam derived from waste PET has high mechanical property and excellent flame-retardant performance to create a sustainable recycling polymer material and improve waste management.

Abstract Image

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利用废弃聚对苯二甲酸乙二醇酯制备可持续聚氨酯纳米复合泡沫：制备、热稳定性和阻燃性

在这项工作中，我们提出并合成了可持续的纳米复合聚氨酯泡沫（PUF），该泡沫由废旧聚对苯二甲酸乙二酯（PET）制成，以纳米氧化锌为增强材料，并加入氢氧化铝（ATH）作为阻燃剂。通过傅立叶变换红外光谱（FTIR）和1H-核磁共振（1H-NMR）确认了二甘醇和 ZnSO4.7H2O 催化剂在微波辐照下对废 PET 进行乙二醇分解得到的低聚二醇的化学结构，并将其连续产物用于制备 PUF 纳米复合材料。加入 ZnO 纳米粒子后，PUF 的密度从 58 g/cm3 降至 35 g/cm3，适用于轻质和绝缘应用。此外，ATH 的加入对于提高 PUF 纳米复合材料的阻燃性也是不可或缺的，在添加 100pp ATH 时可达到 UL-94 (HB)，在添加 150pp ATH 时可达到 UL-94 (VB) V-0，同时还能提高 PUF/ZnO/ATH 纳米复合材料的机械性能。该成果不仅满足了聚合物纳米复合材料在建筑领域应用的防火安全要求、轻质和高力学性能，而且还吸收了大量来自相关行业的废弃 PET 瓶。

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来源期刊

Macromolecular Research 工程技术-高分子科学

CiteScore

4.70

自引率

8.30%

发文量

100

审稿时长

1.3 months

期刊介绍： Original research on all aspects of polymer science, engineering and technology, including nanotechnology Presents original research articles on all aspects of polymer science, engineering and technology Coverage extends to such topics as nanotechnology, biotechnology and information technology The English-language journal of the Polymer Society of Korea Macromolecular Research is a scientific journal published monthly by the Polymer Society of Korea. Macromolecular Research publishes original researches on all aspects of polymer science, engineering, and technology as well as new emerging technologies using polymeric materials including nanotechnology, biotechnology, and information technology in forms of Articles, Communications, Notes, Reviews, and Feature articles.