Controlled grafting superhydrophobic cellulose surface with environmentally-friendly short fluoroalkyl chains by ATRP |
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| Affiliation: | 1. National Engineering Laboratory for Modern Silk, College for Textile and Clothing Engineering, Soochow University, Suzhou 215123, China;2. Research Center of Cooperative Innovation for Functional Organic/Polymer Material Micro/Nanofabrication, Soochow University, Suzhou 215123, China;3. Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;1. School of Materials, The University of Manchester, Manchester M13 9PL, United Kingdom;2. School of Mechanical, Aerospace & Civil Engineering, The University of Manchester, Manchester M13 9PL, United Kingdom;1. Queensland Centre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia;2. School of Science and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland 4575, Australia;1. School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, PR China;2. Southwest Technique and Engineering Institute, Chongqing 400039, PR China;1. Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, PR China;2. Shenyang Jinbo Gas Compression Manufacturing Co. Ltd., Shenyang 110027, PR China;1. Department of Mechanical Engineering, Faculty of Engineering, Bu-Ali Sina University, Hamedan 65178, Iran;2. School of Metallurgical and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran;1. IFIMUP and IN — Institute of Nanoscience and Nanotechnology, Departamento de Física e Astronomia da Faculdade de Ciências da Universidade do Porto, Rua Campo Alegre, 687, 4169-007 Porto, Portugal;2. CFNUL — Centro de Física Nuclear da Universidade de Lisboa, Av. Prof. Gama Pinto, 2, 1649-003 Lisboa, Portugal;3. Blackett Laboratory, Imperial College, London SW7 2AZ, United Kingdom |
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| Abstract: | Short fluoroalkyl chain of C3F7 instead of longer fluoroalkyl chain (C > 7) was robustly grafted on cotton fibers via an atom transfer radical polymerization (ATRP) strategy. This study focused on the influence of different finishing parameters (synthetic approach, grafting concentration) and post-treatment (washing, drying) conditions on wettability, liquid adhesion, air permeability, and mechanical (dry abrasion and wet laundering) properties. The results indicated that C3F7 chain was successfully grafting by a developed ATRP technique to construct superhydrophobic cotton fabrics. The optimized surfaces demonstrated super-anti-wetting property with a contact angle of about 163.7 ± 2.5° and an ultralow droplet adhesion of 62.3 ± 2.6 μN. The wettability remained highly hydrophobic even after 40 abrasion or 35 laundering cycles. This work also demonstrated the rational design and elaboration strategy of short fluorine-containing chains are vital for the construction of super-anti-wetting surfaces with controllable droplet adhesions. The results indicated that the anti-wetting, abrasion and laundering properties are much more influenced by the grafting strategy. We believe that environmental-friendly short fluoroalkyl chain (C < 4) can also be utilized for the construction of cotton fabric with good anti-wetting property and potentially applied in some practical fields, e.g., anti-wetting/icing outdoor cloth or self-cleaning sport textile. |
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