Materials Today Communications ( IF 3.8 ) Pub Date : 2020-06-29 , DOI: 10.1016/j.mtcomm.2020.101375 Dong-Hoon Jang , Byung-Min Park , Kyung Ho Kwon , Moonhor Ree , Kwan-Young Han
Self-healing materials can partially or completely heal the damage done to them, and it is expected that their original function will be thereby restored. Herein, we report a novel self-healing polyvinyl (Sh-PV) containing functional polymer that reacts to thermal and ultraviolet (UV) energy. The structure of Sh-PV was characterized by fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance spectroscopy (1H NMR). In addition, aluminum oxide (Al2O3) inorganic nanoparticles (NPs) were added and hybridized to improve their poor self-healing efficiency and surface hardness of the coated thin film. Mechanical nanoscratch testing and scanning probe microscopy (SPM) imaging of surface using a nanoindenter were performed to investigate the healing ability of self-healing thin films. The organic–inorganic hybrid self-healing polymer thin film exhibited a 10% improvement in surface hardness as well as 100% healing against nanoscale damage compared to virgin self-healing polymers. Here, we discuss and evaluate the optimized method and mechanism of the self-healing system based on the results of self-healing materials and physical recovery methods for healing surface damage.
中文翻译:
具有热和紫外线能量反应性的Al 2 O 3纳米粒子嵌入的聚乙烯基聚合物薄膜的纳米划痕自修复特性
自修复材料可以部分或完全修复对其造成的损坏,因此有望恢复其原始功能。在这里,我们报告了一种新型的自修复聚乙烯(Sh-PV)包含对热和紫外线(UV)能量起反应的功能聚合物。Sh-PV的结构通过傅里叶变换红外光谱(FTIR)和核磁共振光谱(1 H NMR)进行表征。另外,氧化铝(Al 2 O 3)添加无机纳米粒子(NPs)并进行杂交,以改善其较差的自修复效率和涂层薄膜的表面硬度。使用纳米压头对表面进行机械纳米划痕测试和扫描探针显微镜(SPM)成像,以研究自修复薄膜的修复能力。与原始的自修复聚合物相比,有机-无机杂化自修复聚合物薄膜的表面硬度提高了10%,对纳米级损伤的修复率达到了100%。在此,我们根据自我修复材料的结果和用于修复表面损伤的物理恢复方法,讨论并评估了自我修复系统的优化方法和机制。