The Experts below are selected from a list of 21 Experts worldwide ranked by ideXlab platform
Chung Hee Park - One of the best experts on this subject based on the ideXlab platform.
-
analysis of the wetting state of super Repellent Fabrics with liquids of varying surface tension
RSC Advances, 2016Co-Authors: Sohyun Park, Jooyoun Kim, Chung Hee ParkAbstract:In designing a super-Repellent surface that is not wet to liquids with a lower surface tension than water, micro and nano-scale surface roughness have a great impact in addition to low surface energy. In this study, a super-Repellent Fabric was Fabricated using oxygen plasma etching and plasma enhanced chemical vapor deposition (PECVD) with hexamethyldisiloxane (HMDSO). The influence of dual roughness on wettability in micro and nano-scale structures was analyzed using the contact angles of test reagents whose surface tension ranges from 33–72 dyn cm−1. The treated Fabrics produced dual scale roughness, and exhibited contact angles greater than 160° against the test liquid whose surface tension was greater than 42 dyn cm−1. The Cassie–Cassie theoretical model, which is based on the non-wetting assumption of either micro-scale or nano-scale roughness, explained well the actual water contact angles on the treated Fabrics. For the liquid with 42 dyn cm−1 surface tension, the wetting behavior followed behavior between the Cassie–Wenzel state and Cassie–Cassie state depending on the aspect ratio of the nano-scale roughness. With an increased etching time of 7 min or longer, the actual contact angles were measured to be larger than those predicted using the Cassie–Cassie model, which may be a result of the formation of partial re-entrant structures at the tips of the nano-pillars. Self-cleaning effects were demonstrated for solid particles adhered on the treated Fabrics such as silicon carbide and Sudan Black B. Water was more effective in adhering to both particle types and rolling off the surface than isopropyl alcohol solution.
Xiaoyan Li - One of the best experts on this subject based on the ideXlab platform.
-
Preparation of a novel water and oil-Repellent Fabric finishing agent containing a short perfluoroalkyl chain and its application in textiles
Materials Research Innovations, 2015Co-Authors: Yong-long Yang, Liying Zhang, J Shen, Xiaoyan LiAbstract:AbstractA novel fluorocarbon surfactant, N-propyl-N-hydroxyethyl perfluorohexyl sulphonamide, was synthesised by the N-alkylation reaction and nucleophilic substitution reaction, while perfluorohexyl sulphonyl fluoride was used as the raw material. Afterwards, the acrylate monomer containing a short perfluoroalkyl chain, 2-(N-propyl perfluorohexyl sulphonamido) ethyl acrylate, was prepared through the alcoholysis reaction with aforesaid fluorocarbon surfactant. Thereafter, the monomer of fluorinated acrylic ester was polymerised with octadecyl acrylate and 2-ethoxyl acrylate by the emulsion polymerisation, and the emulsion of the novel water and oil-Repellent Fabric finishing agent was formed. The obtained products were characterised by FT-IR and particle size analyser. The results of performance measurement showed that the treated cotton Fabric by the emulsion of water and oil-Repellent finishing agent had excellent water, oil and stain repellency, as well as good washing durability.
Gulay Ozcan - One of the best experts on this subject based on the ideXlab platform.
-
Performance Evaluation of Water Repellent Finishes on Woven Fabric Properties
Textile Research Journal, 2007Co-Authors: Gulay OzcanAbstract:In this study, plain woven Fabrics in two blends were chosen to investigate the effects of water Repellent finishes on woven Fabric properties. The Fabrics were treated with different types of water Repellents at different concentrations. The levels of water repellency of the Fabrics were measured in accordance with the AATCC 22 (1996) spray test method. To evaluate the effect of water Repellent finishes on the woven Fabric properties, breaking strength, abrasion resistance, pilling, light fastness, washing and perspiration tests of the Fabrics were performed using relevant British Standards, ASTM and ISO standards. Wetting time of the Fabrics was also measured before and after abrasion, washing and perspiration tests to evaluate performance and durability of the treatments. The results, evaluated using SPSS statistical program, showed that the water Repellent finish type and concentrations were very important parameters to obtain water Repellent Fabric having acceptable use properties.
Ai-jing Lin - One of the best experts on this subject based on the ideXlab platform.
-
Coexisting antistatic and water-Repellent properties of polyester Fabric
Textile Research Journal, 2010Co-Authors: Tien-wei Shyr, Chin-hsing Lien, Ai-jing LinAbstract:It is desirable for textiles to prevent static charges and to repel water. This work used nano-silver antistatic finish and fluorine water-Repellent finish in order to determine whether it is possible for antistatic and water-Repellent properties to coexist on a single sample of polyester Fabric. The antistatic and water-Repellent Fabric finishes were each tested singly first; both finishes were combined in each of three treatments, namely the one-bath, two-bath A, and two-bath B treatments. The antistatic and the water-Repellent properties of the finished Fabrics were evaluated by FTTS—FA—009 and AATCC 22 spray rating standards. The nano-silver and fluorochemical finishes individually showed high performance properties on polyester Fabric. It was found that the order of the finishing processes has a significant effect on the antistatic and water-Repellent properties of polyester Fabric. The two-bath B process treated polyester Fabric, first with 5 wt% nano-silver antistat and then with 3 wt% fluorine wat...
Sohyun Park - One of the best experts on this subject based on the ideXlab platform.
-
analysis of the wetting state of super Repellent Fabrics with liquids of varying surface tension
RSC Advances, 2016Co-Authors: Sohyun Park, Jooyoun Kim, Chung Hee ParkAbstract:In designing a super-Repellent surface that is not wet to liquids with a lower surface tension than water, micro and nano-scale surface roughness have a great impact in addition to low surface energy. In this study, a super-Repellent Fabric was Fabricated using oxygen plasma etching and plasma enhanced chemical vapor deposition (PECVD) with hexamethyldisiloxane (HMDSO). The influence of dual roughness on wettability in micro and nano-scale structures was analyzed using the contact angles of test reagents whose surface tension ranges from 33–72 dyn cm−1. The treated Fabrics produced dual scale roughness, and exhibited contact angles greater than 160° against the test liquid whose surface tension was greater than 42 dyn cm−1. The Cassie–Cassie theoretical model, which is based on the non-wetting assumption of either micro-scale or nano-scale roughness, explained well the actual water contact angles on the treated Fabrics. For the liquid with 42 dyn cm−1 surface tension, the wetting behavior followed behavior between the Cassie–Wenzel state and Cassie–Cassie state depending on the aspect ratio of the nano-scale roughness. With an increased etching time of 7 min or longer, the actual contact angles were measured to be larger than those predicted using the Cassie–Cassie model, which may be a result of the formation of partial re-entrant structures at the tips of the nano-pillars. Self-cleaning effects were demonstrated for solid particles adhered on the treated Fabrics such as silicon carbide and Sudan Black B. Water was more effective in adhering to both particle types and rolling off the surface than isopropyl alcohol solution.