Abstract Shape memory polymers and self-healing polymers are two types of smart materials, which have great application potential in various fields. In this study, a composite with light-induced shape memory effect, solid-state plasticity and self-healing performance was prepared by incorporating graphene oxide (GO) into a thermoset polyurethane. Based on the great photothermal effect of GO, this composite exhibited excellent light-induced shape memory properties with shape recovery ratio over 95% under irradiation of 1.4 W cm−2 near infrared (NIR) light. Moreover, the composite also possessed light-induced plasticity and light-induced self-healing capability under irradiation of 2.5 W cm−2 NIR light due to the photothermal conversion triggered carbamate exchange reaction in polymer networks. It can be repeatedly reconfigured to new permanent shapes through NIR light irradiating without sacrificing its shape memory properties and remotely controllable healing with fully recovery in structure accompanied by high mechanical properties up to 85% of original value. Based on these special properties, the practicability of this composite as light control actuators, self-healing coatings and optical welding materials was further investigated and the experimental data demonstrated that the composite was qualified for all the aforementioned applications.

中文翻译：

---

一种可重构、自修复和近红外光响应热固性形状记忆聚合物

摘要 形状记忆聚合物和自修复聚合物是两类智能材料，在各个领域都具有巨大的应用潜力。在这项研究中，通过将氧化石墨烯 (GO) 掺入热固性聚氨酯中，制备了一种具有光致形状记忆效应、固态可塑性和自修复性能的复合材料。基于 GO 的巨大光热效应，该复合材料在 1.4 W cm-2 近红外 (NIR) 光照射下表现出优异的光致形状记忆性能，形状恢复率超过 95%。此外，由于光热转换引发聚合物网络中的氨基甲酸酯交换反应，该复合材料在 2.5 W cm-2 NIR 光照射下还具有光致可塑性和光致自愈能力。它可以通过 NIR 光照射反复重新配置为新的永久形状，而不会牺牲其形状记忆特性和远程可控愈合，结构完全恢复，同时具有高达原始值 85% 的高机械性能。基于这些特殊性能，进一步研究了该复合材料作为光控执行器、自修复涂层和光学焊接材料的实用性，实验数据表明该复合材料符合上述所有应用要求。