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Synthesis and antimicrobial effects of highly dispersed, cellulose-stabilized silver/cellulose nanocomposites
RSC Advances ( IF 3.9 ) Pub Date : 2018-01-18 00:00:00 , DOI: 10.1039/c7ra12280b
N S Alahmadi 1 , J W Betts 2 , T Heinze 3 , S M Kelly 1 , A Koschella 3 , J D Wadhawan 4
Affiliation  

Small, spherical silver nanoclusters were synthesised on the surface of paper as a model cellulosic fibre substrate by a standard chemical reduction method. The concentration of the silver nanoclusters on the substrate surface is roughly proportional to the initial silver salt concentration. However, there is a noticeable degree of nanocluster aggregation to larger agglomerates. The addition of small amounts of α-cellulose, carboxymethyl cellulose or aminocellulose during the synthesis of the silver/cellulose nanocomposites suppresses this aggregation and significantly increases the concentration of the silver nanoclusters on the surface of the fibres of cellulose. These small, surface-stabilised silver nanoclusters, with the desired size and morphology, deposited from aqueous solutions on the surface of cellulosic cotton fibres, show enhanced antibacterial activity against MRSA compared to that of the corresponding silver/cotton nanocomposites prepared in the absence of a cellulosic surface stabiliser.

中文翻译:

高度分散、纤维素稳定的银/纤维素纳米复合材料的合成和抗菌作用

通过标准化学还原方法在纸表面合成小的球形银纳米团簇作为模型纤维素纤维基材。衬底表面上银纳米团簇的浓度大致与初始银盐浓度成正比。然而,对于较大的聚集体,存在明显程度的纳米团簇聚集。在银/纤维素纳米复合材料的合成过程中添加少量的α-纤维素、羧甲基纤维素或氨基纤维素可抑制这种聚集并显着增加纤维素纤维表面上银纳米簇的浓度。这些小的、表面稳定的银纳米团簇,具有所需的尺寸和形态,从水溶液中沉积在纤维素棉纤维的表面,
更新日期:2018-01-18
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