4-(Ethoxycarbonyl) phenyl-1-amino-oxobutanoic acid–chitosan complex as a new matrix for silver nanocomposite film: Preparation, characterization and antibacterial activity

Antibacterial activities of novel nanocomposite biofilms of chitosan/phosphoramide/Ag NPs

“…X-ray diffraction analyses were obtained with an Inel EQUINOX 3000 X-ray diffractometer using Cu-Ka wavelength (1.541874 Å ). Intrinsic viscosity measurements were done on an Ubbelohde capillary viscometer (Schott, Germany) attached to a Schott AVS 360 digital counter (Schott, Germany) at 25 C. The capillary of the viscometer had a diameter of 0.63 mm. Using the published Mark-Houwink constants [37,38] yielded the molecular weights of starch and chitosan equal to 56,668,756 and 525,875 g/mol, respectively.…”

“…To perform the swelling behavior of films, 0.02 g of each five nanocomposite films 1-5 plus chitosan/phosphoramide film were immersed in phosphate buffer saline (PBS) solution (0.1 M, pH 5 7.4) at 25 C for 24 h. During 90 min of experiment, the films were weighted at 10 min intervals after removing the water from the surface with filter paper. The water uptake or swelling ratio (SR) was calculated using Eq.…”

“…The antibacterial properties of porous chitosan films impregnated with silver nanoparticles [24] and also of a new aminoacid-chitosan/Ag nanocomposite film [25] were evaluated. Recently, the phosphoramides chemistry has become very attractive owing to the various important applications of these molecules like anticancer prodrug compounds [26,27].…”

Facile preparation of silver/reduced graphene oxide/chitosan colloid and application of the nanocomposite in antibacterial and catalytic activity

“…The fibrous nature of cellulose is clearly visible in a coating of CS along with incorporated AgNPs . However, the non‐crosslinked CS molecules in liquid phase could not supply enough polymer network structure, leading partial AgNPs to aggregate in larger sizes, which limited the applications of these materials in the antibacterial and catalysis fields …”

Low temperature, rapid solution growth of antifouling silver-zeolite nanocomposite clusters

“…They are becoming increasingly important alternative antimicrobial agents in the medical field due to the emergence of pathogenic microbes with resistance to conventional antibiotics [11]. Antimicrobial Ag NM have been studied as dental resins [12], artificial bone growth supports [13], textiles [14], hydrogels [15], biocompatible polymer films [16], implant/prosthetic materials [17], food packaging [18], household and hospital paint coatings [19,20], water treatment systems [21e23], and in sewerage systems [24].…”