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Antimicrobial activity of poly(l-lactide acid)/silver nanocomposite fibers
University of Borås, School of Engineering. (Polymer Group)
2013 (English)In: Textile research journal, ISSN 0040-5175, E-ISSN 1746-7748, Vol. 83, no 20, 2111-2117 p.Article in journal (Refereed)
Abstract [en]

Silver (Ag) nanoparticles (NP) and poly(lactide acid) (PLA) granules were microcompounded to form a nanocomposite. A series of PLA nanocomposite fibers containing, respectively, 0, 0.5, 1, 3 or 5 wt% Ag were produced and their antimicrobial activity against Gram-negative and Gram-positive bacteria evaluated. It was found that the PLA/Ag nanocomposite fibers exhibited increased antimicrobial activity, depending on the filler content. On the other hand, mechanical and thermal characterization tests, including thermogravimetric analysis, differential scanning calorimetry and tensile testing, showed that increasing concentrations of Ag hindered the mechanical properties of Nanocomposites due to partial agglomeration, leading to the generation of flaws. The crystallinity of the fibers was found to decrease by about 23% if the Ag content was increased to 5%. This could be attributed to a more rapid cooling rate resulting from the high thermal conductivity of the Ag particles.

Place, publisher, year, edition, pages
SAGE Journals , 2013. Vol. 83, no 20, 2111-2117 p.
Keyword [en]
Resursåtervinning
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Materials Engineering
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URN: urn:nbn:se:hb:diva-1730DOI: 10.1177/0040517513481875Local ID: 2320/13166OAI: oai:DiVA.org:hb-1730DiVA: diva2:869799
Available from: 2015-11-13 Created: 2015-11-13

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