Abstract

To increase the range of applications of bio-based polymer materials by attributing them self-healing ability is an efficacious way. It is an effective method to use Diels-Alder reaction for self-healing. However, self-healing materials synthesized by multifunctional monomers with Diels-Alder groups possess a low use temperature due to reversibility of DA bonds. In this study, the branched poly(furfuryl methacrylate) was synthesized from furfuryl alcohol, which is a biobased raw material prepared from crops. Using poly(furfuryl methacrylate) and bismaleimide, biobased self-healing polymeric materials were synthesized successfully based on the Diels-Alder reversible reaction. The Diels-Alder direct and reverse reactions occurred upon heating, resulting in self-healing of cracks on the polymer coatings. The thermal stability and use temperature of materials were also improved. All results demonstrated that synthesized materials possessed the characteristics of thermo-reversibility and self-healing and held great potential for self-healing coating applications.

中文翻译：

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基于第尔斯-阿尔德可逆反应的糠醇生物基自修复高分子材料

摘要

通过赋予生物基高分子材料自修复能力来扩大其应用范围是一种有效的途径。利用Diels-Alder反应进行自修复是一种有效的方法。然而，由具有Diels-Alder基团的多官能单体合成的自修复材料由于DA键的可逆性而具有较低的使用温度。本研究以从农作物中提取的生物基原料糠醇为原料，合成了支化聚甲基丙烯酸糠酯。采用聚甲基丙烯酸糠酯和双马来酰亚胺，基于Diels-Alder可逆反应成功合成了生物基自修复高分子材料。加热时发生狄尔斯-阿尔德正反应和逆反应，导致聚合物涂层上的裂纹自愈。材料的热稳定性和使用温度也得到提高。所有结果表明，合成材料具有热可逆性和自修复特性，在自修复涂层应用中具有巨大潜力。