The Experts below are selected from a list of 23958 Experts worldwide ranked by ideXlab platform
Deke Li - One of the best experts on this subject based on the ideXlab platform.
-
metal organic framework superhydrophobic coating on kevlar Fabric with efficient drag reduction and wear resistance
Applied Surface Science, 2018Co-Authors: Deke LiAbstract:Abstract Superhydrophobic layers are extremely essential for protecting material Surface in various applications. In this study, a stable superhydrophobic mixed matrix Surface with a 152.2° contact angle can be Fabricated through the technology of layer-by-layer hot-pressing (HoP), and then modified by 1H,1H,2H,2H-perfluorooctyltriethoxysilane (PFOTES) on the ZIF-8@Kevlar Fabric Surface. The morphology and chemical composition were analyzed by the means of SEM, XRD and FTIR. The obtained superhydrophobic coatings showed excellent antiwear performance and drag reduction under desired working conditions. Moreover, we successfully applied superhydrophobic F-ZIF-8@Kevlar Fabric in the alcohol adsorbent with high removal capacity, and it can be reused for several times without serious efficiency loss.
-
stable and self healing superhydrophobic mno2 Fabrics applications in self cleaning oil water separation and wear resistance
Journal of Colloid and Interface Science, 2017Co-Authors: Deke LiAbstract:Abstract In this work, superhydrophobic Fabrics were prepared through an in-situ growth method for Fabricating hierarchical flower-like MnO2 nanoparticles on cotton Fabric Surface and subsequent STA modification, which exhibited multifunction for self-healing, self-cleaning, oil/water separation and wear resistance. After air-plasma treatment, the self-healing MnO2@Fabric could restore superhydrophobicity by a short time heat treatment, and the water CA without obvious reduction after 8 cycles. Moreover, the MnO2@Fabric could selectively filtrate oil from a mixture of oil and water repeatedly, and demonstrated high efficiency for oil/water separation capability and excellent self-cleaning property. Furthermore, the MnO2@Fabric composite possessed high mechanical strength and good wear resistance, its wear rate could be reduced to 1.21 × 10−14 m3 (N m)−1. The MnO2@Fabric still maintained superhydrophobicity even was seriously damaged after the friction test.
Giulio Malucelli - One of the best experts on this subject based on the ideXlab platform.
-
current emerging techniques to impart flame retardancy to Fabrics an overview
Polymer Degradation and Stability, 2014Co-Authors: Jenny Alongi, Federico Carosio, Giulio MalucelliAbstract:Abstract The present paper is aimed to review the state of the art on the novel and emerging techniques recently developed in the textile field for conferring flame retardant properties to natural and synthetic fibres. In particular, a comprehensive description of the results achieved by depositing (nano)coatings on the Fabric Surface through nanoparticle adsorption, layer by layer assembly, sol–gel and dual-cure processes, or plasma deposition is presented. Finally, the unexpected and recently achieved results in the use of proteins and nucleic acids are discussed.
-
thermal stability flame retardancy and mechanical properties of cotton Fabrics treated with inorganic coatings synthesized through sol gel processes
Carbohydrate Polymers, 2012Co-Authors: Jenny Alongi, Mihaela Diana Ciobanu, Giulio MalucelliAbstract:Abstract Cotton was sol–gel treated employing several metal alkoxide precursors (namely, tetraethylortho-silicate, -titanate, -zirconate and aluminium isopropylate) in order to get inorganic phases able to improve the thermal stability and flame retardancy of the Fabric, without changing its mechanical features. Indeed, after the sol–gel treatment the fibre/Fabric Surface was morphologically modified: a homogeneous and compact film located in the fibre interstices (warp and weft) and partially covering their walls was observed for all the systems investigated. These coatings turned out to be responsible of an overall enhancement of the thermal and fire stability of the Fabrics preserving, at the same time, the original mechanical properties of the neat cotton in terms of tensile strength and deformation. In addition, such inorganic coatings increased the abrasion resistance of the cotton in a remarkable way.
Ahmed Barhoum - One of the best experts on this subject based on the ideXlab platform.
-
towards multifunctional cellulosic Fabric uv photo reduction and in situ synthesis of silver nanoparticles into cellulose Fabrics
International Journal of Biological Macromolecules, 2017Co-Authors: Mohamed Rehan, Ahmed Barhoum, Guy Van Assche, Alain Dufresne, Linda Gatjen, Ralph WilkenAbstract:Herein, the highly multifunctional cotton Fabric Surfaces were designed with excellent coloration, UV-protection function, and antimicrobial activity. These multifunctional functions were developed by in-situ synthesis of silver nanoparticles (Ag NPs) into the cotton Fabric Surface using a simple green one-pot "UV-reduction" method. Cotton Fabrics were pretreated with non-anionic detergent, immersed into alcoholic silver nitrate solution (concentration ranging from 100 to 500ppm), squeezed to remove excess solution and then exposed to UV-irradiation (range 320-400nm) for 1h. The influence UV-irradiation on the thermal, chemical, optical and biological properties of the cotton Fabric Surface was discussed in details. The UV-irradiation promotes reducing of Ag+ ions and the cotton Fabrics act as seed medium for Ag NPs formation by "heterogeneous nucleation". Increasing Ag+ concentration (from 100 to 500ppm) results in Ag NPs of particle size (distribution) of 50-100nm. Interestingly, the Ag NPs exhibited different localized Surface Plasmon resonance properties causing a coloration of the cotton Fabrics with different color shades ranging from bright to dark brown with excellent color fastness properties. The treated cotton Fabrics also show high protecting functions against UV-transmission (reduction of 65%) and Escherichia coli growth (99%). The side-effects of the UV-reduction process are further investigated.
Fengling Qing - One of the best experts on this subject based on the ideXlab platform.
-
superhydrophobic cotton Fabric coating based on a complex layer of silica nanoparticles and perfluorooctylated quaternary ammonium silane coupling agent
Applied Surface Science, 2007Co-Authors: Minghua Yu, Guotuan Gu, Weidong Meng, Fengling QingAbstract:A superhydrophobic complex coating for cotton Fabrics based on silica nanoparticles and perfluorooctylated quaternary ammonium silane coupling agent (PFSC) was reported in this article. The complex thin film was prepared through a sol-gel process using cotton Fabrics as a substrate. Silica nanoparticles in the coating made the textile Surface much rougher, and perfluorooctylated quaternary ammonium silane coupling agent on the top layer of the Surface lowered the Surface free energy. Textiles coated with this coating showed excellent water repellent property, and water contact angle (CA) increased from 133 degrees on cotton Fabrics treated with pure PFSC without silica sol pretreatment up to 145 degrees. The oil repellency was also improved and the contact angle of CH2I2, droplet on the Fabric Surface reached to 131 degrees. In contrast, the contact angle of CH2I2, on the Fabric Surface treated with pure PFSC was only 125 degrees. (c) 2006 Elsevier B.V. All rights reserved.
Jiangfeng Huang - One of the best experts on this subject based on the ideXlab platform.
-
a two step process for Surface modification of poly ethylene terephthalate Fabrics by ar o2 plasma induced facile polymerization at ambient conditions
Surface & Coatings Technology, 2013Co-Authors: Xu Zheng, Guangliang Chen, Zhaoxia Zhang, Jennifer Beem, Sylvain Massey, Jiangfeng HuangAbstract:Abstract In this paper, a two-step process was explored for the modification of poly(ethylene terephthalate) (PET) Fabrics by Ar/O 2 plasma-induced polymerization with hexamethylene diamine (HMD) monomer. The first step involved a parallel-plate shape dielectric barrier discharge (DBD) apparatus to modify the PET Fabrics. This treatment could introduce some polar groups onto the PET Surface, and also simultaneously increased the Surface roughness. Thus, this process was very helpful to increase the linking intensity between the Fabric substrate and the later polymerized layer. For the second step of the process, an atmospheric pressure plasma jet (APPJ) apparatus with Ar and O 2 as working gases was employed to achieve the polymerization with HMD monomer on the Fabric Surface. The measurement of the plasma gas temperature by infrared thermometry, and the detection of reactive species by optical emission spectroscopy were used for characterizing the polymerization process. It was found that the plasma gas temperature was not higher than 307 K when the applied power was lower than 50 W, and many reactive species (e.g. •OH, •H, •O) existed in the plasma. Field emission scanning electron microscopy images showed that the Surface roughness of PET increased greatly with the DBD plasma treatment, and a smooth thin film was formed under the APPJ polymerization with HMD monomer. Fourier transform infrared spectroscopy results indicated that HMD polymer was incorporated into PET Fabrics through the formation of new covalent bonds. Chemical composition was analyzed by X-ray photoelectron spectroscopy, and many functional groups (e.g. C–N, O = C–NH) occurred on the PET Fabric Surface. Meanwhile, the dyeing property of modified PET evaluated by color yield (K/S) analysis was improved obviously.
