Zheng Guolin, Cui Yifan, Jiang Zhe, Zhou Man, Wang Ping, Yu Yuanyuan, Wang Qiang
Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, PR China.
Colloids Surf A Physicochem Eng Asp. 2023 Jun 20;667:131367. doi: 10.1016/j.colsurfa.2023.131367. Epub 2023 Mar 28.
Personal protective textiles have attracted extensive interest since Corona Virus Disease 2019 has broken out. Moreover, developing eco-friendly, multifunctional waterproof, and breathable surface is of great importance but still faces enormous challenges. Notably, good hydrophobicity and breathability are necessary for protective textiles, especially protective clothing and face masks for healthcare. Herein, the multifunctional composite coatings with good UV-resistant, anti-oxidative, hydrophobic, breathable, and photothermal performance has been rapidly created to meet protective requirements. First, the gallic acid and chitosan polymer was coated onto the cotton fabric surface. Subsequently, the modified silica sol was anchored on the coated cotton fabric surface. The successful fabrication of composite coatings was verified by RGB values obtained from the smartphone and K/S value. The present work is an advance for realizing textile hydrophobicity by utilizing fluorine-free materials, compared with the surface hydrophobicity fabricated with conventional fluorinated materials. The surface free energy has been reduced from 84.2 to27.6 mJ/m so that the modified cotton fabric could repel the ethylene glycol, hydrochloric acid, and sodium hydroxide solutions, respectively. Besides, the composite coatings possesses lower adhesion to deionized water. After 70 cycles of the sandpaper abrasion, the fluorine-free hydrophobic coatings still exhibits good hydrophobicity with WCA of 124.6 ± 0.9°, with overcoming the intrinsic drawback of the poor abrasion resistance of hydrophobic surfaces. Briefly, the present work may provide a universal strategy for rapidly creating advanced protective coatings to meet personal healthcare, and a novel method for detecting RGB values of composite coatings by smartphone.
自2019年冠状病毒病爆发以来，个人防护纺织品引起了广泛关注。此外，开发环保、多功能的防水透气表面非常重要，但仍面临巨大挑战。值得注意的是，良好的疏水性和透气性对于防护纺织品是必要的，尤其是医疗保健用的防护服和口罩。在此，为满足防护要求，已迅速制备出具有良好抗紫外线、抗氧化、疏水、透气和光热性能的多功能复合涂层。首先，将没食子酸和壳聚糖聚合物涂覆在棉织物表面。随后，将改性硅溶胶锚固在涂覆的棉织物表面。通过智能手机获得的RGB值和K/S值验证了复合涂层的成功制备。与用传统含氟材料制备的表面疏水性相比，本工作是利用无氟材料实现纺织品疏水性的一项进展。表面自由能已从84.2降低至27.6 mJ/m²，使得改性棉织物能够分别排斥乙二醇、盐酸和氢氧化钠溶液。此外，复合涂层对去离子水的附着力较低。经过70次砂纸磨损循环后，无氟疏水涂层仍表现出良好的疏水性，水接触角为124.6±0.9°，克服了疏水表面耐磨性差的固有缺点。简而言之，本工作可为快速制备先进的防护涂层以满足个人医疗保健提供一种通用策略，以及为通过智能手机检测复合涂层的RGB值提供一种新方法。
