Viscoelastic properties and antimicrobial activity of cellulose fiber sheets impregnated with Ag nanoparticles
Само за регистроване кориснике
Božanić, Dušan K.
Luyt, Adriaan S.
МетаподациПриказ свих података о документу
A silver nanoparticle colloid was prepared by a modified Tollens method using D-glucose as the reduction agent. The obtained nanoparticles were used for the modification of pine, linter and recycled cellulose fibers. Although the silver contents were relatively low (0.05-0.13 wt.%), the cellulose-sheets prepared from the modified fibers show improved mechanical and viscoelastic properties. The tensile index (strength) increased with up to 30% in comparison to the index of the sheets obtained from the untreated fibers. The influence of the nanoparticles on the viscoelastic properties of the cellulose sheets was investigated by dynamic mechanical analysis (DMA) in the temperature range from -120 to 20 degrees C and with a force frequency of 100Hz. A broad relaxation transition positioned at -80 degrees C was observed in the loss modulus spectrum of all the cellulose sheets, while the Ag-modified sheets exhibited higher storage moduli values in the whole temperature range. The antimicrobi...al activity tests show that the pine, silver and recycled cellulose fiber sheets with silver nanoparticles can be successfully employed to prevent the viability and growth of the common pathogens Staphylococcus aureus, Escherichia coli and Candida albicans.
Кључне речи:Antimicrobial properties / Cellulose fibers / Paper / Dynamic mechanical analysis / Silver nanoparticles / Viscoelastic properties
Извор:Carbohydrate Polymers, 2012, 90, 2, 1139-1146
- Elsevier Sci Ltd, Oxford
Финансирање / пројекти:
- University of West Hungary [TAMOP 4.2.1.B-09/1/KONV-2010-0006]
- EU/European Social Foundation [TAMOP 4.2.2.B-10/1-2010]
- info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172056/RS// (RS-172056)
- info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45020/RS// (RS-45020)