Silver nanoparticle incorporation into flexible polyamide 12 membranes

Abstract

To meet the demands of the market and society, the development of structured polymeric materials for application in the medical field is constantly increasing. Over the last decades, metallic silver nanoparticles have been explored due to their antimicrobial action. Here, we aimed to incorporate metallic silver nanoparticles into polymeric pieces obtained by additive manufacture via a chemical route involving silver nitrate and sodium borohydride. Polyamide 12 membranes were obtained by selective laser sintering, which was followed by washing, pretreatment, and functionalization with the alkoxides tetraethylorthosilicate and 3-aminopropyl tetraethoxysilane. For nanoparticle preparation and incorporation, a chemical route was tested under different conditions. The samples were characterized by techniques, such as X-ray diffraction, ultravioletvisible spectroscopy, and infrared vibrational spectroscopy. Nanoparticle formation and incorporation into the polyamide 12 membranes were demonstrated by the absorbance band at 420 nm, which indicated that the particles measured between 10 and 50 nm in size; by the X-ray diffraction peaks at 2θ = 38, 44, and 64°, which are typical of crystalline silver; and by vibrational spectroscopy, which evidenced that the nanoparticles interacted with the polyamide 12 nitrogen groups. Polyamide 12 membranes containing metallic silver nanoparticles have promising biomedical applications as antimicrobial wound dressings associated with drug carriers.

Current Status and Advancement of Nanomaterials within Polymeric Membranes for Water Purification

“…coli), as documented by Alnairat and co-workers . Another study also reported the incorporation of AgNPs into polyamide 12 membranes that were obtained by the selective laser sintering method that was followed by washing, pretreatment, and functionalization with alkoxides and silanes . More studies that report the use of AgNPs in polymeric membranes include the incorporation into poly(ether sulfone) membranes to develop antibacterial and antifouling ultrafiltration membranes and into polysulfone ultrafiltration membranes among others .…”

“…46 Another study also reported the incorporation of AgNPs into polyamide 12 membranes that were obtained by the selective laser sintering method that was followed by washing, pretreatment, and functionalization with alkoxides and silanes. 47 More studies that report the use of AgNPs in polymeric membranes include the incorporation into poly(ether sulfone) membranes to develop antibacterial and antifouling ultrafiltration membranes 48 and into polysulfone ultrafiltration membranes among others. 49 Zinc oxide (ZnO) nanoparticles have also been used expansively as cheap, ecological, and hydrophilic materials since they not only provide antifouling properties to the composite membranes but also provide a photocatalytic self-cleaning capability.…”

Shielding Burn Patients from Oxidative Stress: The Therapeutic Potential of Antioxidant Membranes

“…Although in vitro results were the only results identified, it is worth noting that capping silver nanoparticles with poly(lactic-co-glycolic acid) and ascorbic acid can enhance their antioxidant properties and reduce their oxidant properties [131]. Furthermore, AgNPs can be incorporated into membranes, thus, practical applications are to be expected [132].…”

Silver nanoparticles loaded on lactose/alginate: in situ synthesis, catalytic degradation, and pH-dependent antibacterial activity

“…However, AgNPs synthesized in that way have a number of drawbacks such as high cost and low stability. Typically, AgNPs are loaded onto polymers/composites in order to enhance their performance in usage [4,10,12]. Among polymers, polysaccharides have shown significant improvement in stabilization because of the hydroxy groups in the sugar molecules of the polysaccharide chain, which can form strong associations with AgNPs [13][14][15].…”