Pintarić L Martinaga, Škoc M Somogi, Bilić V Ljoljić, Pokrovac I, Kosalec I, Rezić I
Faculty of Textile Technology, Department of Applied Chemistry, University of Zagreb, 10000 Zagreb Croatia.
Faculty of Pharmacy and Biochemistry, University of Zagreb, 10000 Zagreb, Croatia.
Polymers (Basel). 2020 May 26;12(6):1210. doi: 10.3390/polym12061210.
In this research, a textile surface was modified by the sol-gel methodology with a new antimicrobial coating containing nanoparticles active against bacteria resistant to antibiotics. The effect of ultrasonic irradiation power (40 to 90 kHz), the concentration of reagents (nanoparticles, precursor and acids) and time (15 to 72 min) were investigated in relation to the structure, morphology and antimicrobial activity of coatings with zinc oxide nanoparticles. The relationship between the sonocatalytic performance and structure of the resultant modification was established by using various techniques, such as FTIR spectroscopy (FTIR) and scanning electron microscopy with an EDX detector (SEM-EDX), thin-layer chromatography (TLC) and antimicrobial effects were determined on selected model microorganisms. The homogeneity of layers with ZnO nanoparticles on samples was increased by increasing the ultrasonic irradiation power and time. The ultrasonic irradiation unify did not only unify both the structure and the morphology of samples, it also prevented the agglomeration of the nanoparticles. Moreover, under optimal conditions, an antimicrobial coating with ZnO nanoparticles, active against bacterial species and was efficiently prepared. Results of the methodology revieled excellent results starting after 6 hours of exposal to antimicrobialy functionalized cellulose polymer.
在本研究中，采用溶胶-凝胶法对织物表面进行改性，制备了一种新型抗菌涂层，该涂层含有对耐抗生素细菌具有活性的纳米颗粒。研究了超声辐照功率（40至90kHz）、试剂浓度（纳米颗粒、前驱体和酸）和时间（15至72分钟）对含氧化锌纳米颗粒涂层的结构、形态和抗菌活性的影响。通过使用各种技术，如傅里叶变换红外光谱（FTIR）、带能谱仪的扫描电子显微镜（SEM-EDX）、薄层色谱（TLC），建立了所得改性的声催化性能与结构之间的关系，并测定了对选定模型微生物的抗菌效果。通过提高超声辐照功率和时间，提高了样品上含氧化锌纳米颗粒层的均匀性。超声辐照不仅使样品的结构和形态均匀化，还防止了纳米颗粒的团聚。此外，在最佳条件下，高效制备了对细菌物种具有活性的含氧化锌纳米颗粒抗菌涂层。该方法的结果表明，在对抗菌功能化纤维素聚合物进行6小时的暴露后，取得了优异的结果。
