Perelshtein Ilana, Ruderman Elena, Perkas Nina, Tzanov Tzanko, Beddow Jamie, Joyce Eadaoin, Mason Timothy J, Blanes María, Mollá Korina, Patlolla Anitha, Frenkel Anatoly I, Gedanken Aharon
Department of Chemistry, Kanbar Laboratory for Nanomaterials, Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel.
J Mater Chem B. 2013 Apr 14;1(14):1968-1976. doi: 10.1039/c3tb00555k. Epub 2013 Feb 27.
Nanostructured chitosan (CS) and a chitosan-Zn based (Zn-CS) complex have been synthesized and simultaneously deposited on cotton fabrics using ultrasound. SEM measurements revealed that the coating consists of nanoparticles (NPs) of ca. 40 nm in diameter, homogeneously dispersed along the yarns. XANES studies pointed out that the complex consisted of a less than 2.1 nm ZnO core to which the chitosan was bonded. Additionally, FTIR measurements indicated the in situ formation of a Zn-CS complex which is the only deposited material on the cotton surface. The antibacterial properties of the CS and Zn-CS coated textiles were tested against Gram positive and Gram negative bacteria species. More than two-fold increase of the antibacterial activity of Zn-CS NP coated textiles was detected as compared to the fabrics treated with the sonochemically synthesized CS NPs alone. The sonochemical technique appears to be a suitable method for producing organic NPs of soluble compounds, without loss of their intrinsic properties, i.e. the antimicrobial activity of chitosan. Moreover, hybrid nanoorganometallic particles were simultaneously synthesized and deposited on cotton sonochemically.
已合成了纳米结构的壳聚糖（CS）和壳聚糖 - 锌基（Zn - CS）复合物，并使用超声将它们同时沉积在棉织物上。扫描电子显微镜（SEM）测量显示，涂层由直径约40纳米的纳米颗粒（NPs）组成，这些纳米颗粒沿纱线均匀分散。X射线吸收近边结构（XANES）研究指出，该复合物由一个直径小于2.1纳米的ZnO核心和与之结合的壳聚糖组成。此外，傅里叶变换红外光谱（FTIR）测量表明原位形成了Zn - CS复合物，这是棉织物表面唯一沉积的物质。测试了CS和Zn - CS涂层纺织品对革兰氏阳性和革兰氏阴性细菌的抗菌性能。与仅用声化学合成的CS NPs处理的织物相比，检测到Zn - CS NP涂层纺织品的抗菌活性提高了两倍多。声化学技术似乎是一种生产可溶性化合物有机NPs的合适方法，不会损失其固有特性，即壳聚糖的抗菌活性。此外，通过声化学方法同时合成了杂化纳米有机金属颗粒并将其沉积在棉织物上。
