Jarach Natanel, Meridor David, Buzhor Marina, Raichman Daniel, Dodiuk Hanna, Kenig Shmuel, Amir Elizabeth
Department of Polymer Materials Engineering, Shenkar College, 5252626 Ramat-Gan, Israel.
Polymers (Basel). 2020 Jul 8;12(7):1517. doi: 10.3390/polym12071517.
The development of efficient synthetic strategies for incorporating antibacterial coatings into textiles for pharma and medical applications is of great interest. This paper describes the preparation of functional nonwoven fabrics coated with polyaniline (PANI) via in situ polymerization of aniline in aqueous solution. The effect of three different monomer concentrations on the level of polyaniline coating on the fibers comprising the fabrics, and its electrical resistivities and antibacterial attributes, were studied. Experimental results indicated that weight gains of 0.7 and 3.0 mg/cm of PANI were achieved. These levels of coatings led to the reduction of both volume and surface resistivities by several orders of magnitude for PANI-coated polyester-viscose fabrics, i.e., from 10 to 10 (Ω/cm) and from 10 to 10 Ω/square, respectively. Fourier Transform Infrared (FTIR) Spectroscopy and Scanning Electron Microscopy (SEM) confirmed the incorporation of PANI coating with an average thickness of 0.4-1.5 µm, while Thermogravimetric Analysis (TGA) demonstrated the preservation of the thermal stability of the pristine fabrics. The unique molecular structure of PANI, consisting of quaternary ammonium ions under acidic conditions, yielded an antibacterial effect in the modified fabrics. The results revealed that all types of PANI-coated fabrics totally killed bacteria, while PANI-coated viscose fabrics also demonstrated 100% elimination of bacteria. In addition, PANI-coated, PET-viscose and PET fabrics showed 2.5 log and 5.5 log reductions against respectively.
开发将抗菌涂层整合到用于制药和医疗应用的纺织品中的高效合成策略备受关注。本文描述了通过苯胺在水溶液中的原位聚合制备涂覆有聚苯胺（PANI）的功能性非织造织物。研究了三种不同单体浓度对构成织物的纤维上聚苯胺涂层水平及其电阻率和抗菌属性的影响。实验结果表明，聚苯胺的增重分别达到0.7和3.0 mg/cm。这些涂层水平导致涂覆聚苯胺的聚酯 - 粘胶织物的体积电阻率和表面电阻率分别降低了几个数量级，即从10到10（Ω/cm）和从10到10 Ω/平方。傅里叶变换红外（FTIR）光谱和扫描电子显微镜（SEM）证实了平均厚度为0.4 - 1.5 µm的聚苯胺涂层的掺入，而热重分析（TGA）表明原始织物的热稳定性得以保留。聚苯胺独特的分子结构在酸性条件下由季铵离子组成，在改性织物中产生了抗菌效果。结果表明，所有类型的聚苯胺涂覆织物完全杀死了细菌，而聚苯胺涂覆的粘胶织物也显示出100%消除了细菌。此外，聚苯胺涂覆的PET - 粘胶和PET织物分别对[具体细菌]显示出2.5对数和5.5对数的减少。
