Bartman Marcin, Hołysz Lucyna, Balicki Sebastian J, Szczęsna-Górniak Weronika, Wilk Kazimiera A
Department of Engineering and Technology of Chemical Processes. Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland.
Institute of Chemical Science. Faculty of Chemistry., Maria Curie-Skłodowska University, Plac M. Curie-Skłodowska 3, 20-031, Lublin, Poland.
Chemphyschem. 2024 Feb 1;25(3):e202300771. doi: 10.1002/cphc.202300771. Epub 2023 Dec 14.
Green nanostructured fluids (GNFs), specifically water-in-oil nanoemulsions (w/o NEs), were investigated as professional "brush on, wipe off" nanodetergents for the effective removal of various challenging graffiti coatings. The efficacy of the advanced nanodetergents in eradicating resilient graffiti coatings was evaluated using various methods to assess the surface properties of forming graffiti coatings. The surface properties of these coatings were examined by assessing their wettability by water, surface free energy, and topography to obtain information on the intermolecular interactions with the nanodetergent during the wetting and graffiti removal process. Our findings revealed significant variations in the coating removal rate and efficacy of green nanostructured fluids, which are stabilized using surfactants derived from saccharides or amino acids. A water-in-oil nanoemulsion, stabilized by caprylyl/capryl glucoside, demonstrated exceptional efficiency at cleaning graffiti paints based on alkyd resin and containing various additives such as nitrocellulose or bitumen, from any hard surface within a short time period. However, a w/o NE, stabilized by sodium cocoyl glycinate, also showed effective removal of graffiti paints containing durable bitumen, albeit at a slower rate on. These green nanostructured fluids can be used as specific nanodetergents for the comprehensive removal of various graffiti coatings, but require a specified action time to prevent damage to the original substrate beneath the paint coating.
绿色纳米结构流体（GNFs），特别是油包水纳米乳液（w/o NEs），作为专业的“刷上、擦去”纳米清洁剂进行了研究，用于有效去除各种具有挑战性的涂鸦涂层。使用各种方法评估形成涂鸦涂层的表面性质，以评价这种先进纳米清洁剂去除顽固涂鸦涂层的效果。通过评估这些涂层对水的润湿性、表面自由能和形貌来检查其表面性质，以获取在润湿和去除涂鸦过程中与纳米清洁剂分子间相互作用的信息。我们的研究结果表明，使用源自糖类或氨基酸的表面活性剂稳定的绿色纳米结构流体在涂层去除率和效果上存在显著差异。由辛酰基/辛基葡糖苷稳定的油包水纳米乳液在短时间内从任何硬表面清洁基于醇酸树脂并含有各种添加剂（如硝化纤维素或沥青）的涂鸦涂料方面表现出卓越的效率。然而，由椰油酰甘氨酸钠稳定的w/o NE也显示出对含有耐用沥青的涂鸦涂料有有效去除效果，尽管速度较慢。这些绿色纳米结构流体可用作特定的纳米清洁剂，用于全面去除各种涂鸦涂层，但需要特定的作用时间以防止损坏涂料涂层下方的原始基材。
