کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4409951 1307519 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of silver release from commercially available functional (nano)textiles
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Characterization of silver release from commercially available functional (nano)textiles
چکیده انگلیسی

Silver, both in the nano as well as in other forms, is used in many applications including antimicrobial textiles. Washing of such textiles has already been identified as an important process that results in the release of silver into wastewater. This study thus investigated the release of silver from eight different commercially available silver-textiles during a washing and rinsing cycle. The silver released was size-fractionated and characterized using electron microscopy. In addition, the antimicrobial functionality of the textiles was tested before and after washing. Three of the textiles contained nanosized silver (labeled or confirmed by manufacturers’ information), another used a metallic silver wire and four contained silver in undeclared form. The initial silver content of the textiles was between 1.5 and 2925 mg Ag/kg. Only four of the investigated textiles leached detectable amounts of silver, of which 34–80% was in the form of particles larger than 450 nm. Microscopic analysis of the particles released in the washing solutions identified Ti/Si–AgCl nanocomposites, AgCl nanoparticles, large AgCl particles, nanosilver sulfide and metallic nano-Ag, respectively. The nanoparticles were mainly found in highly agglomerated form. The identified nanotextiles showed the highest antimicrobial activity, whereas some of the other textiles, e.g. the one with a silver wire and the one with the lowest silver content, did not reduce the growth of bacteria at all. The results show that different silver textiles release different forms of silver during washing and that among the textiles investigated AgCl was the most frequently observed chemical form in the washwater.


► Eight commercially available silver textiles were investigated.
► The total silver content ranged from 1.5 to 2925 mg Ag/kg.
► Only four of the textiles released measurable Ag amounts.
► AgCl, Ti/Si–AgCl composites, Ag-sulfide and Ag were identified in washing solution.
► 34–80% of the released Ag was in the form of particles larger than 450 nm.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 89, Issue 7, October 2012, Pages 817–824
نویسندگان
, , , , , , , ,