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Eco-friendly, self-repairing polymer materials based on reversible Diels-Alder chemistry
Journal of Macromolecular Science, Part A ( IF 2.5 ) Pub Date : 2020-08-19 , DOI: 10.1080/10601325.2020.1807365
Bao Wang 1 , Zhiying Li 1 , Fengya Liu 1 , Yudong Liu 1
Affiliation  

Abstract The recyclability and reuse of materials are essential for satisfying the current demand for polymers while alleviating the impact on the environment. Herein, a series of self-repairing polymeric materials were synthesized by exploiting the reversibility of the Diels-Alder (DA) reaction. The main polymer chains were composed of polyethylene glycol diglycidyl ether (PEGDGE) and polypropylene glycol diglycidyl ether (PPGDGE). The DA reaction kinetics and the mechanism of retro-Diels–Alder (rDA) reaction were studied with Fourier transform infrared (FTIR) spectroscopy. The cross-linking conversion rate exceeded 80% after 100 min and reached 99% after 50 h at 65 °C, which is remarkably higher and faster than previous studies. The polymeric material was shown to have excellent reusability and high-temperature self-repairing properties. In addition, the polymer was also capable of performing high-temperature shaping and solvent recovery shaping.

中文翻译:

基于可逆狄尔斯-阿尔德化学的环保、自修复聚合物材料

摘要 材料的可回收性和再利用性对于满足当前对聚合物的需求,同时减轻对环境的影响至关重要。在此,利用狄尔斯-阿尔德 (DA) 反应的可逆性合成了一系列自修复聚合物材料。主要聚合物链由聚乙二醇二缩水甘油醚(PEGDGE)和聚丙二醇二缩水甘油醚(PPGDGE)组成。用傅里叶变换红外 (FTIR) 光谱研究了 DA 反应动力学和逆狄尔斯-阿尔德 (rDA) 反应的机理。交联转化率在 100 分钟后超过 80%,在 65°C 下 50 小时后达到 99%,这明显高于之前的研究。该聚合物材料被证明具有优异的可重复使用性和高温自修复性能。
更新日期:2020-08-19
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