A straightforward pathway is introduced to synthesize a Diels-Alder (DA)-crosslinked epoxy material with glass transition-induced shape recovery capacity, via combination of an epoxy polymer synthesized from bio-based furfurylamine with a telechelic maleimide-ended oligomer derived from 4,4′-methylenebis(N-phenylmaleimide) and 2,2-(ethylenedioxy)diethanethiol. The use of such a BMI-modified crosslinker overcame the poor solubility and brittleness of materials resulting from the BMI analogue. The formation of the precursors and DA crosslinked network, its recyclability, thermo-reversibility and shape memory-aided scratch healability were visualized qualitatively and studied by FTIR and ¹H NMR spectrometry, differential scanning calorimetry, optical microscopy, scanning electron microscopy and tensile measurements. Scratch healing was possible via a two step heating process at 120 °C for 1 h and subsequently at 70 °C for 6 h, reaching a relatively good healing efficiency, evaluated by a tensile strength recovery of approximately 70%.

通过将由生物基糠胺合成的环氧聚合物与衍生自4的远螯马来酰亚胺端基低聚物结合，引入了一条直接途径来合成具有玻璃化转变诱导的形状恢复能力的Diels-Alder（DA）交联环氧材料。 4′-亚甲基双（N-苯基马来酰亚胺）和2，2-（亚乙二氧基）二乙硫醇。这种BMI改性的交联剂的使用克服了由BMI类似物引起的材料的差的溶解性和脆性。通过FTIR和¹进行了定性可视化并研究了前体和DA交联网络的形成，其可回收性，热可逆性和形状记忆辅助的划痕修复性。1 H NMR光谱，差示扫描量热法，光学显微镜，扫描电子显微镜和拉伸测量。通过两步加热过程（在120°C下持续1 h，然后在70°C下持续6 h），可以实现划痕愈合，达到相对较好的愈合效率，并通过约70％的拉伸强度恢复进行评估。