Abstract
The use of Metal-Organic Frameworks (MOF) such as HKUST-1 in textiles is an alternative with regard to the development of technologies that are increasingly seeking for functionalities, mainly in the fields of health and hygiene, named biofunctional fabrics. However, the application of the MOF under the surface of the wool fiber can lead to a low durability finish due to its low fixation. Thus, this project aims to perform the direct synthesis of HKUST in the wool fiber, so that a product with good washing durability can be obtained. The purpose of this study was to incorporate metal-organic frameworks, composed of copper and trimesic acid, into woolen fabrics, to improve the antibacterial properties. The synthesis was performed directly in the wool fabric, at time intervals of 24 and 48 h. The resulting fabrics were characterized by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), X-Ray Diffractometry (XRD), Fourier Transform Spectroscopy Infrared-Attenuated Total Reflectance (FTIR-ATR), and colorimetric analysis (CIElab), and the Antimicrobial Activity Test (American Association of Textile Chemist and Colourists - AATCC Test Method 61-2007-2A) was performed. The results suggested that the application produced textiles with antibacterial properties, showing activity against Escherichia coli.
Highlights
Textiles with improved functionalities can find a variety of applications, such as controlled release of drugs [1,2,3], cosmeotextiles [1,4,5], temperature control [6,7], and anti-microorganism action [8,9,10].The use of antimicrobial agents in textile items is focused on the control of infections coming from the contact between the textile and human skin [11,12]
Since it was possible to synthesize those structures in textiles, the present paper aims to incorporate an Metal-Organic Frameworks (MOF), HKUST-1 (MOF-199), in woolen articles in a direct way for antibacterial functionalization, since the wool fiber acts as an agent of the propagation and hosting of bacteria [28]
Surface, and its presence after washing was proven by cooper signals. These results indicate the performance of the synthesis on the surface of the fabric, as indicated by the thermal analysis and PXRD
Summary
The use of antimicrobial agents in textile items is focused on the control of infections coming from the contact between the textile and human skin [11,12]. The treatments to setup the antibacterial fibers using metallic salts aim at the incorporation of silver [13], copper [6,14], and zinc [15,16] nanoparticles. The use of copper as an antimicrobial agent stands out because of its low cost [8]. The durability effect is restricted because of the low interaction between the nanoparticles and the textile. In this sense, an alternative for a better finishing is to synthesize the metal into a structure that
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