Showing papers by "Haitao Niu published in 2023"
TL;DR: In this paper , a review systematically discusses recent research on super-hydrophobic and antibacterial cellulose fabrics, focusing on morphology construction and surface modification, and their potential applications are also introduced.
Abstract: Cellulose-based fabrics are ubiquitous in our daily lives. They are the preferred choice for bedding materials, active sportswear, and next-to-skin apparels. However, the hydrophilic and polysaccharide characteristics of cellulose materials make them vulnerable to bacterial attack and pathogen infection. The design of antibacterial cellulose fabrics has been a long-term and on-going effort. Fabrication strategies based on the construction of surface micro-/nanostructure, chemical modification, and the application of antibacterial agents have been extensively investigated by many research groups worldwide. This review systematically discusses recent research on super-hydrophobic and antibacterial cellulose fabrics, focusing on morphology construction and surface modification. First, natural surfaces showing liquid-repellent and antibacterial properties are introduced and the mechanisms behind are explained. Then, the strategies for fabricating super-hydrophobic cellulose fabrics are summarized, and the contribution of the liquid-repellent function to reducing the adhesion of live bacteria and removing dead bacteria is elucidated. Representative studies on cellulose fabrics functionalized with super-hydrophobic and antibacterial properties are discussed in detail, and their potential applications are also introduced. Finally, the challenges in achieving super-hydrophobic antibacterial cellulose fabrics are discussed, and the future research direction in this area is proposed.The figure summarizes the natural surfaces and the main fabrication strategies of superhydrophobic antibacterial cellulose fabrics and their potential applications.The online version contains supplementary material available at 10.1007/s42765-023-00297-1.
TL;DR: In this paper , a one-step clean coating process has been developed to make robust fluorine-free super-hydrophobic coating with outstanding color fastness and self-healing property.
Abstract: Clean production of fluorine-free and colorful superhydrophobic surface coating has been highly demanded in many applications but still faces many major challenges. Herein, a one-step clean coating process has been developed to make robust fluorine-free superhydrophobic coating with outstanding color fastness and self-healing property. The coating system comprises cycloolefin copolymer polymer (COC), hexadecyltrimethoxysilane (HDTMS), hydrophobic functionalized TiO2 nanoparticulates and dyeing pigments. Janus cotton fabrics are prepared by applying the TiO2-HDTMS/PB/COC composite coating solution onto the facing side of the fabric by an electrospraying technique. The coated fabric side demonstrates superhydrophobicity showing water contact angle (WCA) of 167.3° ± 2.2° and sliding angle (SA) of 6.9° ± 0.5°, while the un-coated side still retains its original hydrophilic property. The coating shows excellent color fastness and strong bonding strength that can withstand many severe treatments with little affection on color and superhydrophobicity. The coating's original superhydrophobicity can be restored from chemical or physical damages. The developed coating system have also been applied to many other substrates (e.g. polyester, wool, mesh membrane, sponge, etc.). More importantly, the process has low energy consumption with almost no waste liquid produced during the coating process. This simple yet clean coating strategy meets the requirements of green and low energy dyeing, and will benefit the development of robust multifunctional coating.
TL;DR: In this paper , a self-healing under-liquid superlyophobic coating is developed that can be applied onto various substrates (e.g., cotton, polyester, filter paper, wool, hemp, sponge, lyocell, etc.) via a two-step coating process.