Physicochemical properties and antimicrobial activity of nanocomposite films based on carboxymethylcellulose and silver nanoparticles

Abstract

Silver nanoparticles (AgNPs) stabilized by sodium carboxymethylcellulose (Na‐CMC) with degree of substitution (DS) 0.65‐0.90 and degree of polymerization (DP) 200‐600 were synthesized by photochemical method. The structural, physico‐chemical, and physico‐mechanical properties as well as antimicrobial activity of polymer films containing the Na‐CMC and AgNPs were studied. The shape, quantity, and size of the AgNPs embedded into the Na‐CMC films were determined by UV‐Vis spectroscopy, ZETASIZER Nano ZS, atomic force microscopy and transmission electron microscopy. It was found that the increase of silver nitrate concentration in solution of Na‐CMC followed by photoirradiation leads to the change of size and shape of AgNPs. The AgNPs in the range of size from 5 to 35 nm were found to enhance the microbicidal activities of the Na‐CMC films.

An injectable metal nanoparticle containing cellulose derivative‐based hydrogels: Evaluation of antibacterial and in vitro‐vivo wound healing activity in children with burn injuries

“…The representative TEM image in Figure 4B shows that the HMC‐HA hydrogels containing AgNPs exhibit a spherical shape with an average diameter of 30 nm (Figure 4C). 31 The uniform distribution of the AgNPs was confirmed in HRTEM analysis indicating that the AgNPs were well stabilised by the HMC‐HA hydrogel. HRTEM examinations of the AgNPs including HMC‐HA hydrogel showed the long‐range atomic structure through the lattice fringes of atoms, demonstrating the AgNPs’ great crystallinity (inset Figure 4B).…”

Synthesis and characterization of sodium‐carboxymethylcellulose from cotton, powder, microcrystalline and nanocellulose

“…The most important physicochemical characteristics of Na‐CMC that determine their possible application are the solubility and degree of substitution. [ 50 ] Next, we studied the dependence of the complete water solubility of Na‐CMC obtained from CC, PC, MCC and NC at the related DS. The results are shown in Figure 5.…”

Untitled

“…При УФ-облучении растворов Na-КМЦ, содержащих ионы серебра, образовывались довольно устойчивые системы НЧAg бледно-желтого цвета, содержащие в оптических спектрах максимум при λmax=420±10 нм, характеризующий НЧAg размером 5-25 нм [35] (рис. 1, кривая 3).…”