Novel near-infrared (NIR) light-induced bio-based shape memory polymers (SMPs) were prepared from copolymers of vanillin/furfurylamine-based benzoxazine monomer (V-fa monomer) and epoxidized castor oil (ECO). Incorporation of graphene nanoplatelets (GNPs) as photothermal fillers into the copolymers provided shape memory properties under near-infrared (NIR) light actuation. The effects of GNP content on photothermal, thermal, dynamic mechanical, morphology, and shape memory properties of the bio-based benzoxazine/epoxy copolymers (V-fa/ECO copolymers) were investigated. The results showed that the addition of GNPs significantly improved the photothermal, thermal, and dynamic mechanical properties of the copolymers. The uniform dispersion of 3 wt% GNPs in the V-fa/ECO copolymers resulted in the highest shape memory performance with shape fixity of 92% and shape recovery of 99% upon NIR light actuation. The recovery time decreased with the increment of GNP content, and the V-fa/ECO copolymers filled with GNPs displayed good execution in the repeated fold-deploy, in which the shape fixity and shape recovery values were close to the original specimen. Therefore, the outstanding properties of V-fa/ECO copolymers filled with GNPs had a potential to be excellent SMPs under NIR actuation.

新型近红外 (NIR) 光诱导生物基形状记忆聚合物 (SMP) 由香兰素/糠胺基苯并恶嗪单体 (V-fa 单体) 和环氧化蓖麻油 (ECO) 的共聚物制备。将石墨烯纳米片 (GNP) 作为光热填料加入共聚物中，在近红外 (NIR) 光驱动下提供了形状记忆特性。研究了 GNP 含量对生物基苯并恶嗪/环氧共聚物（V-fa/ECO 共聚物）的光热、热、动态机械、形态和形状记忆性能的影响。结果表明，GNPs的加入显着提高了共聚物的光热、热和动态力学性能。V-fa/ECO 共聚物中 3 wt% GNP 的均匀分散导致最高的形状记忆性能，在 NIR 光驱动下形状固定率为 92%，形状恢复率为 99%。恢复时间随着 GNP 含量的增加而减少，填充 GNP 的 V-fa/ECO 共聚物在重复折叠部署中表现出良好的执行力，其中形状固定性和形状恢复值接近原始样品。因此，填充 GNP 的 V-fa/ECO 共聚物的优异性能有可能在 NIR 驱动下成为优异的 SMP。其中形状固定和形状恢复值接近原始试样。因此，填充 GNP 的 V-fa/ECO 共聚物的优异性能有可能在 NIR 驱动下成为优异的 SMP。其中形状固定和形状恢复值接近原始试样。因此，填充 GNP 的 V-fa/ECO 共聚物的优异性能有可能在 NIR 驱动下成为优异的 SMP。