Effective surface attachment of Ag nanoparticles on fibers using glycidyltrimethylammonium chloride and improvement of antimicrobial properties

Jung, Seungho; Kim, Sam Soo; Ahn, Dajeong; Kim, Soo Jung; Lee, Jaewoong

doi:10.1039/c7ra01636k

Cited by 12 publications

(6 citation statements)

References 43 publications

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“…Likewise, PPy-coated fabrics after AS extraction show inconsiderable changes in the amount of PPy on cotton surface: 3.17 ± 0.23 and 3.26 ± 0.19 gPPy/m 2 for pH values of 6.5 and 4.7, respectively. In general, NPs can deeply penetrate fabric surfaces, but, at the same time, they are easily released from clothes, and for this reason it could be necessary to apply compounds such as quaternary ammonium salts to enhance the surface attachment of NPs (i.e., Ag-NPs) [ 27 , 28 ]. However, PPy NPs remained solidly attached to the cotton surface, which gives clear evidence of the affinity that exists between cotton fibers and PPy NPs, as previously reported in literature [ 29 ].…”

Section: Resultsmentioning

confidence: 99%

Safety Assessment of Polypyrrole Nanoparticles and Spray-Coated Textiles

et al. 2021

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Polypyrrole (PPy) nanoparticles (NPs) are used for the coating of materials, such as textiles, with biomedical applications, including wound care and tissue engineering, but they are also promising antibacterial agents. In this work, PPy NPs were used for the spray-coating of textiles with antimicrobial properties. The functional properties of the materials were verified, and their safety was evaluated. Two main exposure scenarios for humans were identified: inhalation of PPy NPs during spray (manufacturing) and direct skin contact with NPs-coated fabrics (use). Thus, the toxicity properties of PPy NPs and PPy-coated textiles were assessed by using in vitro models representative of the lung and the skin. The results from the materials’ characterization showed the stability of both the PPy NP suspension and the textile coating, even after washing cycles and extraction in artificial sweat. Data from an in vitro model of the air–blood barrier showed the low toxicity of these NPs, with no alteration of cell viability and functionality observed. The skin toxicity of PPy NPs and the coated textiles was assessed on a reconstructed human epidermis model following OECD 431 and 439 guidelines. PPy NPs proved to be non-corrosive at the tested conditions, as well as non-irritant after extraction in artificial sweat at two different pH conditions. The obtained data suggest that PPy NPs are safe NMs in applications for textile coating.

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Section: Resultsmentioning

confidence: 99%

Safety Assessment of Polypyrrole Nanoparticles and Spray-Coated Textiles

et al. 2021

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“…Currently, post‐treatment processes are preferred to enable the antimicrobial properties to aromatic polyamide fibers, including coating, 13,14 surface grafting, 15,16 and surface metallization 17,18 . Halogenation (such as chlorination) is an efficient and convenient method for antimicrobial modification, which has the unique advantages of being “chargeable and dischargeable” and eco‐friendly.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial and mildew‐proof aramid fiber III: The chlorination mechanism through experimental and computational investigation

Wang,

Zhou,

Fan

et al. 2023

J of Applied Polymer Sci

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Heterocyclic aramid fiber (Aramid III) is an important member of the aromatic polyamide family, featured as high strength, modulus, and thermal stability. However, the erosion by microorganisms severely jeopardizes these intrinsic properties. In this study, antibacterial and mildew‐proof Aramid III was facilely prepared via chlorination, which exhibited excellent bactericidal ability (100% bactericidal rate at 104 CFU/mL) against various microorganisms while experiencing only a slight decrease (less than 1%) in mechanical and thermal properties. Furthermore, Density Functional theory (DFT) calculations of the chlorination process and NMR spectra of the model molecule BPB revealed that the preferential chlorination sites were the NH bonds on the benzimidazole ring rather than those on amide group, and a cation reaction mechanism was initially proposed based on the differences in activation energy for various reaction pathways. The antibacterial and mildew‐proof functionalization in the present study may effectively prolong the service time of Aramid III, and the revealed chlorination mechanism may provide a reference for other halamine polymers.

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“…To overcome this issue, silver nanoparticles (Ag-NPs) and Ag-NPs-containing composites have recently been developed. From these materials, silver ions are gradually released, thereby providing antimicrobial activity. − In this way, to prepare the antimicrobial silver-treated textile fibers, many authors have focused their attention on the process of preparation of silver nanoparticles with controlled size and on developing methods to attach the Ag-NPs not only on the surface of fibers but also inside them. − Generally, Ag-NPs have low energetic adherence onto fibers when they are produced ex situ and inserted physically or by using conventional physicochemical methods (e.g., pad-dry cure method). In order to overcome this recurrent problem of adherence, the in situ formation of Ag-NPs in textile fibers is also being developed. ,, Many other studies have been focused on the surface examination using the modern instrumental methods and compared to conventional antibacterial efficacy as well as to its durability against multiple washings in the alkaline bath (detergents with or without oxidants). ,,− The current study reports more fundamental research on the in situ formation of silver nanoparticles (Ag-NPs) onto/into five textile fibers (cotton (untreated and chemically bleached), sheep’s wool, polyamide, and polyester) with different surface properties, such as hydrophobicity, roughness, and porosity.…”

Section: Introductionmentioning

confidence: 99%

In Situ Formation of Silver Nanoparticles (Ag-NPs) onto Textile Fibers

et al. 2021

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Silver nanoparticles (Ag-NPs) adhered/inserted on textile fibers have an effective antimicrobial role. However, their release due to low adherence and their fate in the natural settings have been questioned in terms of toxicity level. In order to overcome this recurrent problem of adherence, the in situ formation of Ag-NPs in five textile fibers (cotton (untreated and chemically bleached), sheep’s wool, polyamide, and polyester) was assessed. Herein, the fibers were first immersed in a silver ion solution (1 g/L of AgNO3) for ion saturation at room T for 24 h followed by draining fibers and their reimmersion this time in a strong chemical reducing solution (0.25 g/L of NaBH4) at room T for 24 h. This latter step leads to the in situ formation of Ag-NPs where size (5 nm < size < 50 nm), surface covering concentration, and aggregation degree depend on the textile fiber kind as deduced from FESEM images. This simple lab chemical method allows instantaneous in situ formation of Ag-NPs onto fibers without the requirement of additional thermal treatment. Moreover, for natural fibers, the formation of Ag-NPs inside of them is also expected as confirmed from FESEM images in cotton cross sections. In complement, all textile fibers containing Ag-NPs (sheep’s wool 10 mg/g > untreated cotton 2.3 mg/g > bleached cotton 1 mg/g > polyamide 0.62 mg/g > polyester 0.28 mg/g) were submitted to interact with strong oxidants in an aqueous media (7.5% v/v of H2O2, 0.5 and 0.05 M of HNO3 and ultrapure water as the control) using flow-through reactor experiments. Here, breakthrough curves reveal that the oxidative dissolution rate (given in mol/g min) of adhered Ag-NPs (ionic release) depends strongly on fiber nature, and nature and concentration of oxidant solution. In summary, this fundamental study suggests that Ag-NPs may be successfully adhered/inserted in natural fibers (wool and cotton) in a safety-design perspective with performant biocide properties as confirmed by using Bacillus subtilis.

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Effective surface attachment of Ag nanoparticles on fibers using glycidyltrimethylammonium chloride and improvement of antimicrobial properties

Cited by 12 publications

References 43 publications

Safety Assessment of Polypyrrole Nanoparticles and Spray-Coated Textiles

Safety Assessment of Polypyrrole Nanoparticles and Spray-Coated Textiles

Antibacterial and mildew‐proof aramid fiber III: The chlorination mechanism through experimental and computational investigation

In Situ Formation of Silver Nanoparticles (Ag-NPs) onto Textile Fibers

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