Cationic release behaviour of antimicrobial cellulose/silver nanocomposites
authors Silva, FM; Pinto, RJB; Daniel-da-Silva, AL; Trindade, T
nationality International
journal CELLULOSE
keywords SILVER ION RELEASE; IN-SITU SYNTHESIS; ANTIBACTERIAL ACTIVITY; METAL NANOPARTICLES; ESCHERICHIA-COLI; GREEN SYNTHESIS; KINETICS; BACTERIAL; COMPOSITES; GENERATION
abstract Silver nanoparticles (NPs) have received great attention, mainly due to their application as antimicrobial agents in diverse products, including textile- and paper-based materials. In this context, straightforward methodologies to monitor their cationic silver release capacity in diverse environments are required due to the rise of manufactured products containing silver NPs. Here, we describe the application of a potentiometric method based on a silver-selective electrode to monitor the kinetics of cationic release from cellulose/silver nanocomposites. We designed a set of experiments to apply this method to nanocomposites with several distinct types of cellulose matrices: vegetable, bacterial and nanofibrillated. The morphological features of the cellulose had a great influence on the distribution of silver NPs within the matrix as well as on the Ag+ release profiles. The cationic release profiles were interpreted based on common models, showing that, for the vegetal and bacterial cellulose nanocomposites, the kinetics is pseudo-first order, while for the nanofibrillated cellulose materials a model based on Fick's power law provided the best fit.
publisher SPRINGER
issn 0969-0239
year published 2014
volume 21
issue 5
beginning page 3551
ending page 3560
digital object identifier (doi) 10.1007/s10570-014-0378-0
web of science category Materials Science, Paper & Wood; Materials Science, Textiles; Polymer Science
subject category Materials Science; Polymer Science
unique article identifier WOS:000341489300035
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