Change search
Link to record
Permanent link

Direct link
BETA
Publications (10 of 45) Show all publications
Hedberg, J., Blomberg, E. & Odnevall Wallinder, I. (2019). In the Search for Nanospecific Effects of Dissolution of Metallic Nanoparticles at Freshwater-Like Conditions: A Critical Review. Environmental Science and Technology, 53(8), 4030-4044
Open this publication in new window or tab >>In the Search for Nanospecific Effects of Dissolution of Metallic Nanoparticles at Freshwater-Like Conditions: A Critical Review
2019 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 53, no 8, p. 4030-4044Article in journal (Refereed) Published
Abstract [en]

Knowledge on relations between particle properties and dissolution/transformation characteristics of metal and metal oxide nanoparticles (NPs) in freshwater is important for risk assessment and product development. This critical review aims to elucidate nanospecific effects on dissolution of metallic NPs in freshwater and similar media. Dissolution rate constants are compiled and analyzed for NPs of silver (Ag), copper (Cu), copper oxide/hydroxide (CuO, Cu(OH) 2 ), zinc oxide (ZnO), manganese (Mn), and aluminum (Al), showing largely varying (orders of magnitude) constants when modeled using first order kinetics. An effect of small primary sizes (<15 nm) was observed, leading to increased dissolution rate constants and solubility in some cases. However, the often extensive particle agglomeration can result in reduced nanospecific effects on dissolution and also an increased uncertainty related to the surface area, a parameter that largely influence the extent of dissolution. Promising ways to model surface areas of NPs in solution using fractal dimensions and size distributions are discussed in addition to nanospecific aspects related to other processes such as corrosion, adsorption of natural organic matter (NOM), presence of capping agents, and existence of surface defects. The importance of the experimental design on the results of dissolution experiments of metal and metal oxide NPs is moreover highlighted, including the influence of ionic metal solubility and choice of particle dispersion methodology.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2019
Keywords
Biological materials, Copper oxides, Corrosion, Design of experiments, Dissolution, Fractal dimension, II-VI semiconductors, Metal nanoparticles, Rate constants, Risk assessment, Solubility, Surface defects, Water, Zinc oxide, First order kinetics, Metal and metal oxide nanoparticles, Metallic nanoparticles, Natural organic matters, Orders of magnitude, Particle agglomerations, Particle dispersion, Particle properties, Metals
National Category
Corrosion Engineering
Identifiers
urn:nbn:se:kth:diva-255914 (URN)10.1021/acs.est.8b05012 (DOI)000465190300005 ()2-s2.0-85064571562 (Scopus ID)
Note

QC 20190821

Available from: 2019-08-22 Created: 2019-08-22 Last updated: 2019-10-24Bibliographically approved
Mei, N., Hedberg, J., Odnevall Wallinder, I. & Blomberg, E. (2019). Influence of Biocorona Formation on the Transformation and Dissolution of Cobalt Nanoparticles under Physiological Conditions. ACS Omega, 4(26), 21778-21791
Open this publication in new window or tab >>Influence of Biocorona Formation on the Transformation and Dissolution of Cobalt Nanoparticles under Physiological Conditions
2019 (English)In: ACS Omega, ISSN 2470-1343, Vol. 4, no 26, p. 21778-21791Article in journal (Refereed) Published
Abstract [en]

Cobalt (Co) nanoparticles (NPs) are produced in different applications and unintentionally generated at several occupational and traffic settings. Their diffuse dispersion may lead to interactions with humans and aquatic organisms via different exposure routes that include their transformation/dissolution in biological media. This paper has investigated the particle stability and reactivity of Co NPs (dispersed by sonication prior to exposure) interacting with selected individual biomolecules (amino acids, polypeptides, and proteins) in phosphate-buffered saline (PBS). No or minor adsorption of amino acids (glutamine, glutamic acid, lysine, and cysteine) was observed on the Co NPs, independent of the functional group and charge. Instead, phosphate adsorption resulted in the formation of a surface layer (a corona) of Co phosphate. The adsorption of larger biomolecules (polyglutamic acid, polylysine, lysozyme, and mucin) was evident in parallel with the formation of Co phosphate. The dissolution of the Co NPs was rapid as 35-55% of the particle mass was dissolved within the first hour of exposure. The larger biomolecules suppressed the dissolution initially compared to exposure in PBS only, whereas the dissolution was essentially unaffected by the presence of amino acids, with cysteine as an exception. The formation of Co phosphate on the NP surface reduced the protective properties of the surface oxide of the Co NPs, as seen from the increased levels of the released Co when compared with the nonphosphate-containing saline. The results underline the diversity of possible outcomes with respect to surface characteristics and dissolution of Co NPs in biological media and emphasize the importance of surface interactions with phosphate on the NP characteristics and reactivity.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2019
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-266719 (URN)10.1021/acsomega.9b02641 (DOI)000504635000015 ()31891055 (PubMedID)2-s2.0-85076772366 (Scopus ID)
Note

QC 20200117

Available from: 2020-01-17 Created: 2020-01-17 Last updated: 2020-02-04Bibliographically approved
Pradhan, S., Hedberg, J., Rosenqvist, J., Jonsson, C. M., Wold, S., Blomberg, E. & Odnevall Wallinder, I. (2018). Influence of humic acid and dihydroxy benzoic acid on the agglomeration, adsorption, sedimentation and dissolution of copper, manganese, aluminum and silica nanoparticles - A tentative exposure scenario. PLoS ONE, 13(2), Article ID e0192553.
Open this publication in new window or tab >>Influence of humic acid and dihydroxy benzoic acid on the agglomeration, adsorption, sedimentation and dissolution of copper, manganese, aluminum and silica nanoparticles - A tentative exposure scenario
Show others...
2018 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 13, no 2, article id e0192553Article in journal (Refereed) Published
Abstract [en]

This work focuses on kinetic aspects of stability, mobility, and dissolution of bare Cu, Al and Mn, and SiO2 NPs in synthetic freshwater (FW) with and without the presence of natural organic matter (NOM). This includes elucidation of particle and surface interactions, metal dissolution kinetics, and speciation predictions of released metals in solution. Dihydroxy benzoic acid (DHBA) and humic acid adsorbed rapidly on all metal NPs (< 1 min) via multiple surface coordinations, followed in general by rapid agglomeration and concomitant sedimentation for a large fraction of the particles. In contrast, NOM did not induce agglomeration of the SiO2 NPs during the test duration (21 days). DHBA in concentrations of 0.1 and 1 mM was unable to stabilize the metal NPs for time periods longer than 6 h, whereas humic acid, at certain concentrations (20 mg/L) was more efficient (> 24 h). The presence of NOM increased the amount of released metals into solution, in particular for Al and Cu, whereas the effect for Mn was minor. At least 10% of the particle mass was dissolved within 24 h and remained in solution for the metal NPs in the presence of NOM. Speciation modeling revealed that released Al and Cu predominantly formed complexes with NOM, whereas less complexation was seen for Mn. The results imply that potentially dispersed NPs of Cu, Al and Mn readily dissolve or sediment close to the source in freshwater of low salinity, whereas SiO2 NPs are more stable and therefore more mobile in solution.

Place, publisher, year, edition, pages
PUBLIC LIBRARY SCIENCE, 2018
National Category
Materials Engineering
Identifiers
urn:nbn:se:kth:diva-224031 (URN)10.1371/journal.pone.0192553 (DOI)000424517900091 ()2-s2.0-85041731628 (Scopus ID)
Note

QC 20180323

Available from: 2018-03-23 Created: 2018-03-23 Last updated: 2018-10-19Bibliographically approved
Skoglund, S., Blomberg, E., Odnevall Wallinder, I., Grillo, I., Pedersen, J. S. & Bergström, L. M. (2017). A novel explanation for the enhanced colloidal stability of silver nanoparticles in the presence of an oppositely charged surfactant. Physical Chemistry, Chemical Physics - PCCP, 19(41), 28037-28043
Open this publication in new window or tab >>A novel explanation for the enhanced colloidal stability of silver nanoparticles in the presence of an oppositely charged surfactant
Show others...
2017 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 19, no 41, p. 28037-28043Article in journal (Refereed) Published
Abstract [en]

The structural behavior in aqueous mixtures of negatively charged silver nanoparticles (Ag NPs) together with the cationic surfactants cetyltrimethylammonium bromide (CTAB) and dodecyltrimethylammonium chloride (DTAC), respectively, has been investigated using SANS and SAXS. From our SANS data analysis we are able to conclude that the surfactants self-assemble into micellar clusters surrounding the Ag NPs. We are able to quantify our results by means of fitting experimental SANS data with a model based on cluster formation of micelles with very good agreement. Based on our experimental results, we propose a novel mechanism for the stabilization of negatively charged Ag NPs in a solution of positively charged surfactants in which cluster formation of micelles in the vicinity of the particles prevents the particles from aggregating. Complementary SAXS and DLS measurements further support this novel way of explaining stabilization of small hydrophilic nanoparticles in surfactant-containing solutions.

Place, publisher, year, edition, pages
ROYAL SOC CHEMISTRY, 2017
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-217409 (URN)10.1039/c7cp04662f (DOI)000413778800015 ()28994441 (PubMedID)2-s2.0-85032624124 (Scopus ID)
Note

QC 20171121

Available from: 2017-11-21 Created: 2017-11-21 Last updated: 2017-11-21Bibliographically approved
Ferraris, M., Perero, S., Ferraris, S., Miola, M., Verne, E., Skoglund, S., . . . Odnevall Wallinder, I. (2017). Antibacterial silver nanocluster/silica composite coatings on stainless steel. Applied Surface Science, 396, 1546-1555
Open this publication in new window or tab >>Antibacterial silver nanocluster/silica composite coatings on stainless steel
Show others...
2017 (English)In: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 396, p. 1546-1555Article in journal (Refereed) Published
Abstract [en]

A coating made of silver nanocluster/silica composites has been deposited, Via a radio frequency (RF) co-sputtering technique, for the first time onto stainless steel (AISI 304L) with the aim to improve its antibacterial properties. Different thermal treatments after coating deposition have been applied in order to optimize the coating adhesion, cohesion and its antibacterial properties. Its applicability has been investigated at realistic conditions in a cheese production plant. The physico-chemical characteristics of the coatings have been analyzed by means of different bulk and surface analytical techniques. Field emission scanning electron microscopy (FESEM), X-ray Photoelectron Spectroscopy (XPS), contact angle measurements and atomic force microscopy (AFM) were employed to assess coating morphology, composition, surface roughness, wetting properties, size and local distribution of the nanoparticles within the coating. Tape tests were used to determine the adhesion/cohesion properties of the coating. The amount and time-dependence of released silver in solutions of acetic acid, artificial water, artificial tap water and artificial milk were determined by means of Atomic Absorption Spectroscopy (AAS). The antibacterial effect of the coating was evaluated at different experimental conditions using a standard bacterial strain of Staphylococcus aureus in compliance with National Committee for Clinical Laboratory Standards (NCCLS) and AATCC 147 standards. The Ahearn test was performed to measure the adhesion of bacteria to the coated stainless steel surface compared with a control surface. The antibacterial coating retained its antibacterial activity after thermal treatment up to 450 degrees C and after soaking in common cleaning products for stainless steel surfaces used for e.g. food applications. The antibacterial capacity of the coating remained at high levels for 1-5 days, and showed a good capacity to reduce the adhesion of bacteria up to 30 days. Only a few percent of silver in the coating was released into acetic acid, even after 10 days of exposure at 40 degrees C. Most silver (> 90%) remained also in the coating even after 240 h of continuous exposure. Similar observations were made after repeated exposure at 100 degrees C. Very low levels of released silver in solution were observed in artificial milk. No release of silver nanoparticles was observed either in synthetic tap water or in artificial milk at given conditions. The coating further displayed good antibacterial properties also when tested during working conditions in a cheese production plant.

Place, publisher, year, edition, pages
Elsevier, 2017
Keywords
Antibacterial coating, Sputtering, Silver nanoclusters, Steel, Cheese production
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-200749 (URN)10.1016/j.apsusc.2016.11.207 (DOI)000391418200043 ()2-s2.0-85006940232 (Scopus ID)
Note

QC 20170210

Available from: 2017-02-10 Created: 2017-02-10 Last updated: 2017-11-29Bibliographically approved
Hedberg, Y., Hedberg, J., Isaksson, S., Mei, N., Blomberg, E., Wold, S. & Odnevall Wallinder, I. (2017). Nanoparticles of WC-Co, WC, Co and Cu of relevance for traffic wear particles – Particle stability and reactivity in synthetic surface water and influence of humic matter. Environmental Pollution, 224, 275-288
Open this publication in new window or tab >>Nanoparticles of WC-Co, WC, Co and Cu of relevance for traffic wear particles – Particle stability and reactivity in synthetic surface water and influence of humic matter
Show others...
2017 (English)In: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 224, p. 275-288Article in journal (Refereed) Published
Abstract [en]

Studded tyres made of tungsten carbide cobalt (WC-Co) are in the Northern countries commonly used during the winter time. Tungsten (W)-containing nano- and micron-sized particles have been detected close to busy roads in several European countries. Other typical traffic wear particles consist of copper (Cu). The aims of this study were to investigate particle stability and transformation/dissolution properties of nanoparticles (NPs) of WC-Co compared with NPs of tungsten carbide (WC), cobalt (Co), and Cu. Their physicochemical characteristics (primarily surface oxide and charge) are compared with their extent of sedimentation and metal release in synthetic surface water (SW) with and without two different model organic molecules, 2,3- and 3,4-dihydroxybenzoic acid (DHBA) mimicking certain sorption sites of humic substances, for time periods up to 22 days. The WC-Co NPs possessed a higher electrochemical and chemical reactivity in SW with and without DHBA molecules as compared with NPs of WC, Co, and Cu. Co was completely released from the WC-Co NPs within a few hours of exposure, although it remained adsorbed/bonded to the particle surface and enabled the adsorption of negatively charged DHBA molecules, in contrast with the WC NPs (no adsorption of DHBA). The DHBA molecules were found to rapidly adsorb on the Co and Cu NPs. The sedimentation of the WC and WC-Co NPs was not influenced by the presence of the 2,3- or 3,4-DHBA molecules. A slight influence (slower sedimentation) was observed for the Co NPs, and a strong influence (slower sedimentation) was observed for the Cu NPs in SW with 2,3-DHBA compared with SW alone. The extent of metal release increased in the order: WC < Cu < Co < WC-Co NPs. All NPs released more than 1 wt-% of their metal total mass. The release from the Cu NPs was most influenced by the presence of DHBA molecules.

Place, publisher, year, edition, pages
Elsevier, 2017
Keywords
Cobalt, Copper, Metal release, Nanoparticles, Tungsten, Metal nanoparticles, Metals, Molecules, Sedimentation, Tungsten alloys, Tungsten carbide, 3, 4-Dihydroxybenzoic acids, Micron-sized particles, Nanoparticle (NPs), Negatively charged, Physicochemical characteristics, Synthetic surfaces, Tungsten carbide cobalt, Surface waters
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-207343 (URN)10.1016/j.envpol.2017.02.006 (DOI)000399261400026 ()2-s2.0-85011949542 (Scopus ID)
Note

QC 20170607

Available from: 2017-06-07 Created: 2017-06-07 Last updated: 2017-11-13Bibliographically approved
Hedberg, J., Karlsson, H. L., Hedberg, Y., Blomberg, E. & Wallinder, I. O. (2016). The importance of extracellular speciation and corrosion of copper nanoparticles on lung cell membrane integrity. Colloids and Surfaces B: Biointerfaces, 141, 291-300
Open this publication in new window or tab >>The importance of extracellular speciation and corrosion of copper nanoparticles on lung cell membrane integrity
Show others...
2016 (English)In: Colloids and Surfaces B: Biointerfaces, ISSN 0927-7765, E-ISSN 1873-4367, Vol. 141, p. 291-300Article in journal (Refereed) Published
Abstract [en]

Copper nanoparticles (Cu NPs) are increasingly used in various biologically relevant applications and products, e.g., due to their antimicrobial and catalytic properties. This inevitably demands for an improved understanding on their interactions and potential toxic effects on humans. The aim of this study was to investigate the corrosion of copper nanoparticles in various biological media and to elucidate the speciation of released copper in solution. Furthermore, reactive oxygen species (ROS) generation and lung cell (A549 type II) membrane damage induced by Cu NPs in the various media were studied. The used biological media of different complexity are of relevance for nanotoxicological studies: Dulbecco's modified eagle medium (DMEM), DMEM+ (includes fetal bovine serum), phosphate buffered saline (PBS), and PBS + histidine. The results show that both copper release and corrosion are enhanced in DMEM+, DMEM, and PBS + histidine compared with PBS alone. Speciation results show that essentially no free copper ions are present in the released fraction of Cu NPs in neither DMEM+, DMEM nor histidine, while labile Cu complexes form in PBS. The Cu NPs were substantially more membrane reactive in PBS compared to the other media and the NPs caused larger effects compared to the same mass of Cu ions. Similarly, the Cu NPs caused much more ROS generation compared to the released fraction only. Taken together, the results suggest that membrane damage and ROS formation are stronger induced by Cu NPs and by free or labile Cu ions/complexes compared with Cu bound to biomolecules.

Place, publisher, year, edition, pages
Elsevier, 2016
Keywords
Copper nanoparticles, Nanotoxicity, Lung cells, Speciation, Corrosion, Membrane damage, DMEM, Equilibrium modeling, UV-vis spectroscopy, Polarography
National Category
Biophysics Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-186555 (URN)10.1016/j.colsurfb.2016.01.052 (DOI)000374197700034 ()26859121 (PubMedID)2-s2.0-84957022551 (Scopus ID)
Note

QC 20160513

Available from: 2016-05-13 Created: 2016-05-13 Last updated: 2017-11-30Bibliographically approved
Wang, X., Herting, G., Odnevall Wallinder, I. & Blomberg, E. (2015). Adsorption of bovine serum albumin on silver surfaces enhances the release of silver at pH neutral conditions. Physical Chemistry, Chemical Physics - PCCP, 17(28), 18524-34
Open this publication in new window or tab >>Adsorption of bovine serum albumin on silver surfaces enhances the release of silver at pH neutral conditions
2015 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 17, no 28, p. 18524-34Article in journal (Refereed) Published
Abstract [en]

Metallic biomaterials are widely used to replace and/or restore the function of damaged bodily parts. The use of silver as antibacterial coatings onto implants has recently gained large interest in medical applications. The extent of silver that can be released into different biological fluids from such coatings is, except for the surface characteristics of the coating, governed by parameters such as protein characteristics, adsorbed layer properties, formation of silver-protein complexes as well as concentrations of proteins in the solution. This study aims to relate the structure of adsorbed net negatively charged bovine serum albumin (BSA), which is the most abundant protein in serum, to the release of silver from metallic silver surfaces in order to elucidate if the net charge of the protein has any effect of the silver release. Simultaneous adsorption measurements were performed in real time on the very same surface using combined ellipsometry and quartz crystal microbalance with dissipation monitoring (QCM-D) measurements to provide a more comprehensive understanding on adsorption kinetics and layer structures. The amount of released silver into solution was measured by means of graphite furnace atomic absorption spectroscopy (GF-AAS). The structure of the adsorbed BSA layer largely influenced the amount of released silver, an enhancement that increased with BSA concentration. These observations are in complete contrast to the effect of net positively charged lysozyme (LSZ) adsorbed on silver, previously studied by the authors, for which a complete surface coverage suppressed the possibility for silver release. The underlying mechanisms behind the enhanced release of silver in the presence of BSA were mainly attributed to surface complexation between BSA and silver followed by an enhanced exchange rate of these surface complexes with BSA molecules in the solution, which in turn increase the amount of released silver in solution.

Place, publisher, year, edition, pages
RSC Publishing, 2015
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-171106 (URN)10.1039/c5cp02306h (DOI)000357808500034 ()26111372 (PubMedID)2-s2.0-84936984549 (Scopus ID)
Funder
Swedish Research Council
Note

QC 20150720

Available from: 2015-07-20 Created: 2015-07-20 Last updated: 2017-12-04Bibliographically approved
Wang, X., Herting, G., Odnevall Wallinder, I. & Blomberg, E. (2014). Adsorption of Lysozyme on Silver and Its Influence on Silver Release. Langmuir, 30(46), 13877-13889
Open this publication in new window or tab >>Adsorption of Lysozyme on Silver and Its Influence on Silver Release
2014 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 30, no 46, p. 13877-13889Article in journal (Refereed) Published
Abstract [en]

Silver is increasingly used in antimicrobial coatings of biomedical devices and implants to hinder infections. As proteins have been shown to largely influence the extent of released metals from various metal surfaces at biological conditions, silver may also be influenced in the same way. The aim of this study is to relate the structure of adsorbed lysozyme (LSZ) to the release of silver from metallic silver surfaces. Simultaneous adsorption measurements were performed in real time on the same surface using combined ellipsometry and quartz crystal microbalance with dissipation monitoring measurements to provide a more comprehensive understanding on the adsorption kinetics and the layer structures. The concentration of LSZ in 0.15 M NaNO3 solution (pH 7, 25 degrees C) influences the structure of the adsorbed layer. Monolayer coverage is obtained at concentrations =0.1 g/L, while a bilayer structure with a rigid inner layer and a relatively loosely adsorbed outer layer is formed at 1 g/L. The inner layer of LSZ is assumed to bind firmly to silver via disulfide bridges, which makes it irreversibly adsorbed with respect to dilution. The amount of released silver is further influenced by the structure of the LSZ layer. At low LSZ concentrations (=0.1 g/L) the amount of released silver is not significantly different compared with non-protein-containing NaNO3 solutions; however, noticeable reduction was observed at higher concentrations (1 g/L). This reduction in silver release has several possible explanations, including (i) surface complexation between LSZ and silver ions that may result in the incorporation of silver in the irreversible adsorbed layer and, hence, reduce the amount of released silver into solution, and (ii) net charge reversal at the protein/solution interface to slightly positive surface potentials. Any release of silver will therefore exhibit an electrostatic repulsion during transportation through the protein layer results in a reduced amount of silver in solution.

Keywords
Adsorption, Covalent bonds, Crystallography, Enzymes, Metal ions, Quartz, Adsorption kinetics, Adsorption measurement, Antimicrobial coatings, Biological conditions, Biomedical devices, Electrostatic repulsion, Quartz crystal microbalance with dissipation monitoring, Surface complexation
National Category
Chemical Sciences Materials Engineering
Identifiers
urn:nbn:se:kth:diva-158285 (URN)10.1021/la503170x (DOI)000345552000020 ()25363360 (PubMedID)2-s2.0-84912573332 (Scopus ID)
Funder
Swedish Research Council
Note

QC 20150109

Available from: 2015-01-09 Created: 2015-01-07 Last updated: 2017-12-05Bibliographically approved
Ferraris, S., Perero, S., Miola, M., Vernè, E., Rosiello, A., Ferrazzo, V., . . . Ferraris, M. (2014). Chemical, mechanical and antibacterial properties of silver nanocluster/silica composite coated textiles for safety systems and aerospace applications. Applied Surface Science, 317, 131-139
Open this publication in new window or tab >>Chemical, mechanical and antibacterial properties of silver nanocluster/silica composite coated textiles for safety systems and aerospace applications
Show others...
2014 (English)In: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 317, p. 131-139Article in journal (Refereed) Published
Abstract [en]

This work describes the chemical, mechanical and antibacterial properties of a novel silver nanocluster/silica composite coating, obtained by sputtering, on textiles for use in nuclear bacteriological and chemical (NBC) protection suites and for aerospace applications.

The properties of the coated textiles were analyzed in terms of surface morphology, silver concentration and silver release in artificial sweat and synthetic tap water, respectively. No release of silver nanoparticles was observed at given conditions.

The water repellency, permeability, flammability and mechanical resistance of the textiles before and after sputtering demonstrated that the textile properties were not negatively affected by the coating.

The antibacterial effect was evaluated at different experimental conditions using a standard bacterial strain of Staphylococcus aureus and compared with the behavior of uncoated textiles.

The coating process conferred all textiles a good antibacterial activity. Optimal deposition conditions were elaborated to obtain sufficient antibacterial action without altering the aesthetical appearance of the textiles.

The antibacterial coating retained its antibacterial activity after one cycle in a washing machine only for the Nylon based textile.

National Category
Corrosion Engineering
Identifiers
urn:nbn:se:kth:diva-154729 (URN)10.1016/j.apsusc.2014.07.196 (DOI)000344379900019 ()2-s2.0-84908220488 (Scopus ID)
Projects
NASLA
Funder
EU, FP7, Seventh Framework Programme, 262209
Note

QC 20141205

Available from: 2014-10-27 Created: 2014-10-27 Last updated: 2017-12-05Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-7496-1101

Search in DiVA

Show all publications