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Open AccessArticle

Multifunctional Nanocomposite Cellulose Fibers Doped in Situ with Silver Nanoparticles

1
Faculty of Microsystem Electronics and Photonics, Wrocław University of Technology, Janiszewskiego 11/17, 50-372 Wrocław, Poland
2
Faculty of Chemistry, Wrocław University of Technology, Norwida 4/6, 50-373 Wrocław, Poland
3
Polish Centre for Technology Development PORT, Stabłowicka 147, 54-066 Wroclaw, Poland
4
Faculty of Electrical, Electronic, Computer and Control Engineering, Technical University of Łódź, Żeromskiego 116, 90-924 Łódź, Poland
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(3), 562; https://doi.org/10.3390/polym11030562
Received: 28 February 2019 / Revised: 18 March 2019 / Accepted: 20 March 2019 / Published: 25 March 2019
(This article belongs to the Special Issue Cellulose and Renewable Materials)
This paper presents a method for the preparation of nanocomposite cellulose fibers doped with silver nanoparticles (AgNPs), as well as the effect of silver nanoparticles on the structure and properties of fibers. The fibers were obtained by an environmentally friendly method using N-Methylmorpholine N-oxide (NMMO) as a solvent, in a non-polluting closed system. Doping with silver nanoparticles was carried out as a direct (in situ) reduction of Ag+ ions in the presence of a stabilizing agent during the preparation of the spinning solution. SEM images of the surface and cross section of the fibers showed that the distribution of nanoparticles in the fibers’ volume was uniform. The fibers exhibited very good antibacterial properties in relation to Staphylococcus aureus, Escherichia coli, Acinetobacter baumannii, and Candida albicans. Flammability analysis showed that the fibers were subjected to a one-stage combustion process and that the silver nanoparticles reduced the heat release rate (HRR) of the fibers by 36%. TG studies showed that the modification of cellulose fibers with silver nanoparticles promoted the formation of mill scale in the combustion of fibers, which was directly related to the reduction of flammability. Tests of the electrical properties showed that the linear resistance of cellulose fibers containing 3 wt % silver was 108 Ω/cm. View Full-Text
Keywords: silver nanoparticles; cellulose fibers; nanocomposite fibers; antibacterial properties; flame resistivity silver nanoparticles; cellulose fibers; nanocomposite fibers; antibacterial properties; flame resistivity
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MDPI and ACS Style

Rac-Rumijowska, O.; Maliszewska, I.; Fiedot-Toboła, M.; Karbownik, I.; Teterycz, H. Multifunctional Nanocomposite Cellulose Fibers Doped in Situ with Silver Nanoparticles. Polymers 2019, 11, 562.

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