Synthesis and characterisation of superhydrophobic CNC/ZnO nanocomposites by using stearic acid

Abstract

The synthesis of superhydrophobic materials by using inorganic materials and organic renewable materials is a hot topic in academic research. At present, the methods used to prepare superhydrophobic composites are complicated and the hydrophobic modifiers used are expensive. The authors report a simple and efficient method for the synthesis of superhydrophobic composites. At the beginning, the cellulose nanocrystal (CNC)/ZnO nanocomposites were prepared by mechanical blending method, and the surface micro-nano rough structure was constructed. Then the superhydrophobic CNC/ZnO nanocomposites were obtained by hydrophobic modification with cheap low surface energy substance. The results demonstrate that the inorganic-organic nanocomposites have excellent superhydrophobic properties, which indicates that the inorganic-organic nanocomposites have potential applications as hydrophobic additives in coatings and other fields.

Synthesis and Characterization of ZnO Nanoparticles and Their Application on Cotton Fabrics to Obtain Superhydrophobic Surfaces

“…On the other hand, any increase in the stearic acid concentration after 1wt% decreases the CA. This is due to the formation of the thick stearic-acid layer on the ZnO surface, which reduces the roughness effect of the ZnO NPs; In addition, the excess carboxylic groups of stearic acid are deposited on the surface, leading to a decrease in CA 23 .…”

Flexible, humidity- and contamination-resistant superhydrophobic MXene-based electrospun triboelectric nanogenerators for distributed energy harvesting applications

“…23,39 SA modification with polar carboxylic (-COOH) groups has been reported to reinforce the triboelectric material's surface and enrich its electronegativity. 40 Besides, the formation of a long hydrocarbon chain of SA on the material's surface is of great significance to modulate the surface energy, 41,42 providing a superhydrophobic surface which helps retain a stable output voltage even under high humidity conditions. The obtained superhydrophobic surface can promote self-cleaning properties, ensuring the decontamination of the TENG for reusability.…”

Preparation and Characterization of Waterborne UV Lacquer Product Modified by Zinc Oxide with Flower Shape

“…As a kind of inorganic material, zinc oxide nanoparticles have diversified morphology and excellent physicochemical properties [17]. Therefore, ZnO nanoparticles are a common packing, they are low cost [18][19][20], harmless to the environment [19], and have excellent photoelectric performance and rich form.…”