Udoh Inime I, Ekerenam Okpo O, Daniel Enobong F, Ikeuba Alexander I, Njoku Demian I, Kolawole Sharafadeen K, Etim Ini-Ibehe N, Emori Wilfred, Njoku Chigoziri N, Etim Iniobong P, Uzoma Paul C
The Hempel Foundation Coatings Science and Technology Centre (CoaST), Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), 2800 Kgs. Lyngby, Denmark; Nigerian Alumni Association of the Institute of Metal Research, Chinese Academy of Sciences (NAAIMCAS), Nigeria.
Department of Biochemistry, School of Pure & Applied Sciences, Federal University of Technology, Ikot Abasi, Akwa Ibom State, Nigeria; Nigerian Alumni Association of the Institute of Metal Research, Chinese Academy of Sciences (NAAIMCAS), Nigeria.
Adv Colloid Interface Sci. 2024 Aug;330:103209. doi: 10.1016/j.cis.2024.103209. Epub 2024 Jun 4.
The durability and functionality of many metallic structures are seriously threatened by corrosion, which makes the development of anticorrosive coatings imperative. This state-of-the-art survey explores the recent developments in the field of anticorrosive organic coatings modulated by innovations involving nano/microcontainers with porous matrices. The integration of these cutting-edge delivery systems seeks to improve the protective properties of coatings by enabling controlled release, extended durability, targeted application of corrosion inhibitors, and can be co-constructed to achieve defect filling by polymeric materials. The major highlight of this review is an in-depth analysis of the functionalities provided by porous nano/microcontainers in the active protection and self-healing of anticorrosive coatings, including their performance evaluation. In one case, after 20 days of immersion in 0.1 M NaCl, a scratched coating containing mesoporous silica nanoparticles loaded with an inhibitor benzotriazole and shelled with polydopamine (MSNs-BTA@PDA) exhibited coating restoration indicated by a sustained corrosion resistance rise over an extended period monitored by impedance values at 0.01 Hz frequency, rising from 8.3 × 10 to 7.0 × 10 Ω cm, a trend assigned to active protection by the release of inhibitors and self-healing capabilities. Additionally, some functions related to anti-fouling and heat preservation by nano/microcontainers are highlighted. Based on the literature survey, some desirable properties, current challenges, and prospects of anticorrosive coatings doped with nano/microcontainers have been summarized. The knowledge gained from this survey will shape future research directions and applications in a variety of industrial areas, in addition to advancing smart corrosion prevention technology.
许多金属结构的耐久性和功能性受到腐蚀的严重威胁，这使得开发防腐涂层势在必行。本前沿综述探讨了由涉及具有多孔基质的纳米/微容器的创新所调制的防腐有机涂层领域的最新进展。这些前沿递送系统的整合旨在通过实现控释、延长耐久性、靶向应用缓蚀剂来提高涂层的防护性能，并且可以共同构建以实现聚合物材料的缺陷填充。本综述的主要亮点是深入分析多孔纳米/微容器在防腐涂层的主动保护和自修复中所提供的功能，包括其性能评估。在一个案例中，在0.1 M NaCl中浸泡20天后，含有负载缓蚀剂苯并三唑并用聚多巴胺包覆的介孔二氧化硅纳米颗粒（MSNs-BTA@PDA）的划痕涂层表现出涂层修复，这通过在0.01 Hz频率下由阻抗值监测的长时间内持续的耐腐蚀性上升来表明，从8.3×10 上升到7.0×10 Ω·cm，这种趋势归因于抑制剂的释放和自修复能力的主动保护。此外，还突出了纳米/微容器与防污和保温相关的一些功能。基于文献调查，总结了掺杂纳米/微容器的防腐涂层的一些理想性能、当前挑战和前景。从本次综述中获得的知识将塑造未来在各种工业领域的研究方向和应用，此外还将推动智能防腐技术的发展。
