Transparent polyurethane coating with synergistically enhanced antibacterial mechanism composed of low surface free energy and biocide

Facile fabrication of robust and universal UV‐curable polyurethane composite coatings with antibacterial properties

“…Compared to the unmodified polyurethane molecules, the antimicrobial‐modified polyurethane introduced a large number of nonpolar long‐chain alkyl groups, which have a lower surface free energy and can easily migrate to the surface and enrich on the surface of the coatings. Therefore, the surface free energy of the composite coatings decreased, and their water contact angles increased 29,30 …”

“…surface free energy of the composite coatings decreased, and their water contact angles increased. 29,30…”

Transparent anti-fingerprint glass surfaces: comprehensive insights into theory, design, and prospects

“…Following this line of argument, existing literature classifies fingerprint-resistant surfaces into three types, based on variations in surface wettability: oleophilic, self-decomposing, and hydrophobic fingerprint-resistant surfaces. [62][63][64][65] Additionally, it should be emphasized that while certain SLIPS [66][67][68] transparent antifouling surfaces may possess anti-fingerprint properties, the prevalent lubricating oil on these surfaces poses contamination risks. Given these challenges for applications on actual transparent functional surfaces, we opted to exclude a summary in this context.…”

A Bifunctional Spray Coating Reduces Contamination on Surfaces by Repelling and Killing Pathogens

“…Furthermore, the optimization of the nanoparticle concentration compromised the hydrophobic nature of the coating, resulting in water contact angles as low as 106° . A recently developed coating consisting of hydroxyl-terminated quaternary ammonium salts enriched on a polyurethane coating (antifouling and antibacterial) showed immediate contact killing, corresponding to a 98.6% antibacterial activity with S. aureus ; however, water contact angle measurements were as low as 100° . To address the latter issues, studies have recently focused on omniphobic coatings with superior repellency to high and low surface tension liquids and excellent antimicrobial activity. − For example, polystyrene-based porous structures infiltrated with silicone oil (antifouling) and modified with 3-(trimethoxysilyl)­propyl dimethyl undecyl ammonium chloride (antibacterial) displayed sliding angle values less than 5° and a bacterial repellency of up to 98% with S. aureus.…”