Highly Transparent and Colorless Self‐Healing Polyacrylate Coatings Based on Diels–Alder Chemistry,Macromolecular Materials and Engineering

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Highly Transparent and Colorless Self‐Healing Polyacrylate Coatings Based on Diels–Alder Chemistry
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-01-13 , DOI: 10.1002/mame.201900652
Giovanni Fortunato ₁ , Elisavet Tatsi ₁ , Benedetta Rigatelli ₁ , Stefano Turri ₁ , Gianmarco Griffini ₁

Affiliation

The efficient integration of reversible polymer networks into acrylate‐based polymeric materials is of peculiar interest for the development of coatings that combine high transparency with self‐healing ability. In this work, reversible networks are obtained by reacting a series of linear copolymers of furfuryl methacrylate with aliphatic bismaleimides through Diels–Alder (DA) reaction between furan and maleimide moieties. Owing to dynamic crosslinking, the obtained coatings exhibit thermal reversibility, as determined by differential scanning calorimetry and dissolution experiments. Furthermore, upon heating over the retro‐DA temperature, an excellent recovery of mechanically induced surface damages proves successful thermal remendability. Compared to previous reports on DA‐based acrylate networks, the presented thermally responsive coatings exhibit outstanding transparency and absence of color, as a result of an accurate choice of suitable monomeric precursors. In addition, a pronounced hydrophobic behavior and excellent adhesive properties make the proposed material particularly suitable for optical applications.

中文翻译：

基于Diels-Alder化学的高度透明和无色的自修复聚丙烯酸酯涂料

将可逆性聚合物网络有效地集成到丙烯酸酯类聚合物材料中对于开发将高透明度与自修复能力相结合的涂料具有特殊意义。在这项工作中，可逆性网络是通过呋喃和马来酰亚胺基团之间的Diels-Alder（DA）反应，使一系列甲基丙烯酸糠酯与脂肪族双马来酰亚胺的线性共聚物反应而获得的。由于动态交联，如通过差示扫描量热法和溶解实验所确定的，所获得的涂层表现出热可逆性。此外，在逆向DA温度以上加热时，机械诱导的表面损伤的出色恢复证明了成功的热可修正性。与之前有关基于DA的丙烯酸酯网络的报告相比，由于正确选择了合适的单体前体，因此本发明的热响应性涂料表现出出色的透明性和无色感。另外，明显的疏水性和优异的粘合性能使所提出的材料特别适合于光学应用。

更新日期：2020-02-14

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