Supramolecular-assisted nanocomposite coatings with sustainable and robust resistance to microbially mediated biofouling and corrosion
简介：Surface-adhering biofilms contribute significantly to irreversible biofouling and corrosion,presenting a multi-trillion-dollar annual problem in public health and industry.Strategies employing antibacterial elements are emerging to fabricate multifunctional coatings that effectively combat such microbially produced damage.However,rapid,reliable,and robust surface engineering remains challenging due to stability limitations and intricate anti-biofilm additive dynamics.Herein,a silver-capsule-conjugated polyurethane coating with high stability and antimicrobial efficacy in a cooperative manner is developed through controlled supramolecular self-assembly.Polyvinylpyrrolidone(PVP)-mediated molecule entan-glement breaks through the incompatibility between polymeric components and nanomaterials,strength-ening the dispersion and fixation of encapsulated silver nanoparticles.The facilitation and control of the nanoscale interfacial binding significantly suppresses the aggregation of inorganic nanoparticles and con-sequent microcracks development,giving rise to mechanical robustness and thermal stability of the hy-brid coating under extreme conditions.A synergistic combination of exposed residues,electrostatic,and coordination interactions could readily integrate the resultant coating on virtually arbitrary material sur-faces.This composite coating exhibits broad-spectrum and high bactericidal efficiencies of 99.99％against Staphylococcus aureus and Escherichia coli,as well as excellent biofilm formation suppression.Moreover,our coating has robust resistance to microbial-influenced corrosion(MIC)and can even endure 720 h of salt spray.This study deciphers a general code for creating stable and durable nanohybrid coatings to mitigate microbially related risks.展开
学者：JianyangWangXiangyuLIZhiqunYuRunqingZhangMengMingxingDakeXUFuhuiYingZheng
关键词：Ag encapsulationSupramolecular interactionsantibacterial activityAnti-biofilmAnti-microbial corrosionROS formation
在线出版日期：2025-03-06 （网站首发日期）
