Delpierre Sébastien, Willocq Bertrand, De Winter Julien, Dubois Philippe, Gerbaux Pascal, Raquez Jean-Marie
Department of Materials Research and Technology, National Composite Center-Luxembourg, Luxembourg Institute of Science and Technology, 41 rue du Brill, Belvaux, Luxembourg.
Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons, Place du Parc 23, 7000, Mons, Belgium.
Chemistry. 2017 May 17;23(28):6730-6735. doi: 10.1002/chem.201700333. Epub 2017 Apr 26.
Developing intrinsic self-healing polymeric materials is of great interest nowadays to extend material lifetime and/or prevent the replacement of damaged pieces. Spontaneously humidity-sensitive healable polymer network built around dynamic covalent B-O bonds was templated by using iminoboronate-based boroxine derivatives. Taking advantage of the dynamic boroxine/boronic acid equilibrium and iminoboronate chemistry, it is possible to construct polymeric materials able to self-heal without requiring any energy-demanding external activation. Interestingly, this novel family of iminoboronate adduct-based materials can be readily produced by a relatively simple and straightforward synthesis between boronic acid and diamine-based compounds, paving the way to coatings that are self-healable at ambient humidity.
如今，开发具有内在自修复能力的聚合物材料对于延长材料寿命和/或防止更换受损部件具有重大意义。通过使用基于亚氨基硼酸酯的硼氧烷衍生物作为模板，构建了围绕动态共价B-O键的自发湿度敏感可自愈聚合物网络。利用动态硼氧烷/硼酸平衡和亚氨基硼酸酯化学，可以构建无需任何高能耗外部激活就能自我修复的聚合物材料。有趣的是，这种基于亚氨基硼酸酯加合物的新型材料家族可以通过硼酸和二胺基化合物之间相对简单直接的合成方法轻松制备，为在环境湿度下可自我修复的涂层开辟了道路。
