In Situ Synthesis of a Silver-Containing Superabsorbent Polymer via a Greener Method Based on Carboxymethyl Celluloses

Abstract

An antibacterial superabsorbent polymer (SAP) was synthesized by grafting acrylic acid (AA) onto carboxymethyl cellulose (CMC) and mixing with silver particles, with N,N′-methylenebisacrylamide used as a crosslinker and potassium persulfate as an initiator. Silver nanoparticles were produced through the reaction between glucose and silver nitrate. The effects of the amount of silver nitrate added in the polymer on the swelling ratio were investigated and the maximum swelling ratio of the SAP loaded with silver particles in distilled water and in a 0.9 wt % NaCl solution reached 840 g/g and 71 g/g, respectively, when the silver nitrate added was 50 mg. The SAP was characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, ultraviolet-visible spectroscopy, scanning electron microscopy, energy dispersive spectrometry, transmission electron microscopy, and thermogravimetric analysis. Through these analysis methods, it could be seen that the acrylic acid was successfully grafted onto CMC, forming a three-dimensional network structure, with the successful production of silver nanoparticles with sizes ranging from 5 nm to 50 nm. Moreover, the antibacterial properties of the SAP loaded with silver nanoparticles against Staphylococcus aureus and Escherichia coli were investigated and the results show that they became more effective with increasing silver nitrate concentration. The obtained SAP can be useful in developing new antibacterial medical and public health supplies.

Effects of poly-γ-glutamic acid and poly-γ-glutamic acid super absorbent polymer on the sandy loam soil hydro-physical properties

“…Super absorbent polymers (SAP) have been developed as the materials with 3D network structure which allow for water absorption at an amount that is several hundred times higher than their original weight without dissolving [ 12 , 13 ]. SAPs could be used in agricultural field.…”

Four modified sodium alginate/carboxymethylcellulose blends for prednisone delivery

“…Figure 2(b) presents the XRD patterns of the developed blends, where the characteristic peak attributed to the semicrystalline structure of SA and CMC appears at approximately 2θ = 20° 47,49,50 . The broad band observed at 2θ = 30–50° can be assigned to the amorphous halo of the SA and CMC polysaccharides 51,52 . The diffractogram of the CNC‐reinforced blend ( 2 ) exhibited a characteristic intense diffraction peak at 2θ = 23° because of the presence of cellulose nanocrystals 53,54 .…”

Antimicrobial and Wound Treatment Aspects of Micro‐ and Nanoformulations of Carboxymethyl, Dialdehyde, and TEMPO‐Oxidized Derivatives of Cellulose: Recent Advances

“…This hydrogel containing AgNPs with a diameter size of 5–50 nm showed significant growth inhibitory results in the case of E. coli and S. aureus pathogens. [ 27 ] In a similar study, electrospun fibers of CMC/polyethylene oxide were used to biosynthesize AgNPs with a mean size of 20 nm. [ 28 ] This nanofiber illustrated prominent antibacterial effects on E. coli and S. aureus as well as 700% of swelling ratio after 12 h. In another study, sodium borohydride and phthalated‐cashew gum were used respectively as reducer and stabilizer agents to synthesize AgNPs.…”