Silver nanoparticle deposition on hydrophilic multilayer film surface and its effect on antimicrobial activity

Abstract

Silver nanoparticles were deposited on the surface of the external polyamide 6 (PA6) layer of a multilayer film, by spraying and ultrasound-assisted methods. The effect of silver nanoparticles content and deposition method on the mechanical and optical properties of the multilayered films as well as the efficiency of silver ion release and their fungicidal characteristics were evaluated. Itaconic (IA) and Maleic anhydride (MA) were used as adhesion promoter agents for preventing the agglomeration of the silver nanoparticles and for improving the adhesion to the PA6 polymer surface. With IA, a homogeneous distribution of silver nanoparticles on the PA6 surface was achieved. The silver ion release and biocide effect of the multilayered films was found to be dependent on the anhydride type and on the deposition method used. The multilayer films with a layer of PA6-silver nanocomposite demonstrated good fungicidal activity, specifically against fungus Aspergillius niger. The observed results could be applied in the design of industrial films for packaging.

Enhanced mechanical properties and bactericidal activity of polypropylene nanocomposite with dual‐function silica–silver core‐shell nanoparticles

“…Untreated PP showed no antibacterial activity. This result is in good agreement with Ag/polyimide nanocomposite with Ag loading of 0.06 wt % 8. The antibacterial mechanism observed in the composites is possibly due to Ag + biocide released from polymer nanocomposites 8, 11…”

“…These results are in good agreement with previous studies of Ag incorporation into polymer nanocomposites. 8,11,26 Using a calibration method,8, 11, 26 the quantitative amount of Ag + release can be determined. The concentration of Ag + released from the SiO 2 @Ag NPs/polypropylene composite is in good agreement with that released from the Ag/PP composite 26.…”

“…PP filled with powdered SiO 2 NPs can be used to enhance mechanical properties 5. Ag NPs incorporated into polymers (i.e., polyamide and PP) form high antibacterial nanocomposites 6–8. This can play an important role in the manufacture and use of medical devices, appliances, filters, nonwoven films, and antibacterial food packaging films 9, 10.…”

Antimicrobial materials based on poly(ethylene‐co‐vinyl alcohol) and silver acetate produced by reactive extrusion

“…Several kinds of antimicrobial molecules from different families have been used, such as acids, amino acids, alcohols, terpenes, peptides, proteins, polysaccharides antiseptics, metal oxides, and metal salts . Many additives have been tested to obtain the best antimicrobial activity and to create an optimal material.…”

“…[6][7][8][9][10][11] Several kinds of antimicrobial molecules from different families have been used, such as acids, [12][13][14][15][16] amino acids, 11,17 alcohols, terpenes, [18][19][20] peptides, proteins, [21][22][23][24] polysaccharides 25,26 antiseptics, [27][28][29][30][31][32][33] metal oxides, and [34][35][36] metal salts. [37][38][39][40][41][42] Many additives have been tested to obtain the best antimicrobial activity and to create an optimal material. A previous study has demonstrated the antimicrobial activity of acrylate hydrogels in which silver acetate was introduced.…”