Wang Qi, Yan Xuefeng, Liu Ping, Xu Yiyan, Guan Qingbao, You Zhengwei
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Institute of Functional Materials, Research Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society), Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China.
Zhejiang Hexin New Material Co., Ltd., Jiaxing 314000, China.
Polymers (Basel). 2023 Aug 13;15(16):3394. doi: 10.3390/polym15163394.
Through the effective combination of photothermal conversion agent polydopamine (PDA) nanoparticles and epoxy acrylate polymer (EA), a new kind of near-infrared (NIR) light-triggered shape memory polymer (PDA/EA) is developed. Due to the outstanding photothermal effect of PDA, even with a very low concentration of PDA (0.1 wt.%), when exposed to an 808 nm NIR light with a power of 1 W/cm, the temporary shapes can be fully light-responsive, recovered in 60 s. Based on dynamic thermomechanical analysis and thermal gravimetric analysis, it can be seen that the introduction of PDA is beneficial for improving dynamic mechanical properties and thermal resistance compared to EA. As an environmentally friendly and highly efficient photoactive SMP, PDA/EA has a great application prospect.
通过将光热转换剂聚多巴胺（PDA）纳米颗粒与环氧丙烯酸酯聚合物（EA）有效结合，开发出了一种新型近红外（NIR）光触发形状记忆聚合物（PDA/EA）。由于PDA具有出色的光热效应，即使PDA浓度非常低（0.1 wt.%），当暴露于功率为1 W/cm的808 nm近红外光下时，临时形状也能完全对光响应，在60秒内恢复。基于动态热机械分析和热重分析可以看出，与EA相比，PDA的引入有利于改善动态力学性能和耐热性。作为一种环境友好且高效的光活性形状记忆聚合物，PDA/EA具有广阔的应用前景。
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