Improvement of self-cleaning waterborne polyurethane-acrylate with cationic TiO₂/reduced graphene oxide

Abstract

Eco-friendly waterborne polyurethane-acrylate with high-performance via incorporation of cationic TiO2/reduced graphene oxide.

UV-curable waterborne polyurethane coatings: A state-of-the-art and recent advances review

“…The incorporation of inorganic nanoparticles into a UV-WPU matrix is an effective strategy to enhance some properties and provide specific functionalities to this system [152]. Hardness, tensile strength, water absorption, solvent resistance, and thermal behavior of UV-WPUs can be significantly improved by adding nanoparticles like acryloyl chloride modified lysozyme [134], silver [90,157], graphene oxide [107,112,113], surfactant-modified TiO 2 /reduced graphene oxide [45], graphitic carbon nitride [94], and Fe 3 O 4 [70,71]. These nanoparticles also provide excellent antibacterial activity, electrical conductivity, good electronic stability, self-cleaning ability in photocatalysis, and unique magnetic behavior to the coatings.…”

“…All the nanoparticles mentioned before must be added to UV-WPU systems in an ideal concentration. Above which, they can cause aggregation and heterogeneous distribution in the nanocomposite, compromising the properties of hardness, gel content, and mechanical resistance [45,70,76,108,135], as shown in Fig. 7.…”

Effect of heat treatment under vacuum on structure and visible-light photocatalytic activity of nano-TiO2

“…In recent years, the research on photocatalysis technology of TiO 2 has attracted increasing attention from scientic communities due to its appealing advantages such as the high catalytic oxidation activity, the fast photocatalysis degradation reaction, the high photocatalytic activity, and so on. 2,3 Thus, TiO 2 based photocatalysts have great potential for applications in a wide range of areas, for example, environmental management, 4 development of new energy, [5][6][7][8][9] air purication, 10,11 sewage treatment, 12 self-cleaning ceramics, 13,14 sterilization material, [15][16][17][18] photoelectric conversion, 19,20 etc. However, the application of TiO 2 based photocatalysts is still limited due to the following two aspects.…”

Recent Advances in Functional Polyurethane and Its Application in Leather Manufacture: A Review

“…In the application of self-cleaning polymer coatings, the introduction of photocatalytic activity can endow self-cleaning ability [ 23 ]. In a research, it provided a novel and eco-friendly approach for fabrication of waterborne polyurethane acrylate with self-cleaning performance in photocatalysis by incorporating surfactant-modified TiO 2 /reduced grapheneoxide (TiO 2 /rGO) nanocomposites [ 24 ]. The dispersibility of TiO 2 /rGO nanocomposites in the polymer matrix was improved by incorporation of cationic surfactant hexadecyl trimethyl ammonium bromide (CTAB).…”