Hong Hyae Rim, Kim Jooyoun, Park Chung Hee
Department of Textiles, Merchandising and Fashion Design, Seoul National University Seoul 08826 Republic of Korea
RSC Adv. 2018 Dec 13;8(73):41782-41794. doi: 10.1039/c8ra08310j. eCollection 2018 Dec 12.
This study aims to develop a multifunctional fabric for antibacterial, superhydrophobic and conductive performance using a facile fabrication method. Conductive metal particles, copper and silver, were used as antibacterial agents as well as a means to create nanoscale roughness on the fabric surface. Subsequent hydrophobic coating with 1-dodecanethiol produced a superhydrophobic surface. The single metal treatment with Cu or Ag, and the combined metal treatment of Cu/Ag were compared for the multifunctionality. The Cu/Ag treated fabric and the Cu treated fabric showed a bacteriostatic rate ≥ 99% and a sterilization rate ≥ 99% against , suggesting a higher antibacterial activity against the Gram-positive bacteria. In contrast, the Ag treated fabric showed a lower antibacterial effect regardless of the bacteria type. With regards to conductivity, the single metal treated fabric did not exhibit conductivity; however the Cu/Ag treated fabric showed a high level conductivity with a surface resistivity of 25.17 ± 8.18 Ω sq and 184.38 ± 85.42 Ω sq before and after hydrophobic coating, respectively. Fabrics treated with Cu and Cu/Ag particles (with hydrophobic coating) displayed superhydrophobic characteristics with the contact angle of 161-162° and the shedding angle of 7.0-7.8°. The air permeability decreased after the particle treatment as the particles blocked the pores in the fabric. However, the water vapor permeability and tensile strength were not significantly affected by the particle treatment. This study is significant in that a multifunctionality of antibacterial effect, superhydrophobicity, and conductivity was achieved through the facile processes for metal nanoparticle attachment and hydrophobic coating. The multifunctional fabrics produced in this study can be practically applied to self-cleaning smart clothing, which has reduced laundering need, without hygiene concerns.
本研究旨在采用简便的制备方法开发一种具有抗菌、超疏水和导电性能的多功能织物。导电金属颗粒铜和银被用作抗菌剂，同时也是在织物表面产生纳米级粗糙度的一种手段。随后用1-十二烷硫醇进行疏水涂层处理，得到超疏水表面。比较了用铜或银进行的单一金属处理以及铜/银的复合金属处理的多功能性。经铜/银处理的织物和经铜处理的织物对[具体细菌名称未给出]的抑菌率≥99%，杀菌率≥99%，表明对革兰氏阳性菌具有较高的抗菌活性。相比之下，无论细菌类型如何，经银处理的织物抗菌效果较低。关于导电性，单一金属处理的织物不具有导电性；然而，经铜/银处理的织物具有高导电性，疏水涂层前后的表面电阻率分别为25.17±8.18Ω/sq和184.38±85.42Ω/sq。用铜和铜/银颗粒处理（并进行疏水涂层）的织物表现出超疏水特性，接触角为161 - 162°，滚落角为7.0 - 7.8°。颗粒处理后透气率下降，因为颗粒堵塞了织物中的孔隙。然而，颗粒处理对水汽渗透率和拉伸强度没有显著影响。本研究的意义在于，通过金属纳米颗粒附着和疏水涂层的简便工艺实现了抗菌、超疏水和导电的多功能性。本研究中制备的多功能织物可实际应用于自清洁智能服装，减少洗涤需求，且不存在卫生问题。
