Abstract
Sodium carboxymethyl cellulose/poly(acrylamide-co-2-acrylamido-2-methylpropane sulfonic acid) semi-interpenetrating polymer network (semi-IPN) hydrogels were prepared by using free radical polymerization technique. Silver nanoparticles were formed by reduction of silver nitrate in semi-IPN hydrogels with sodium borohydrate at room temperature. UV-visible spectroscopy, thermogravimetrical analysis, X-ray diffractometry, scanning electron microscopy, and transmission electron microscopy techniques were used to characterize the formation of silver nanoparticles in hydrogels. SEM images indicated clearly the formation of group of silver nanoparticles with size range of 10–20 nm. The sizes of silver nanoparticles were also supported by transmission electron microscopy results. The semi-IPN silver nanocomposite hydrogels reported here might be a potentially smart material in the range of applications of antibacterial activity.
Highlights
Nanocomposite polymer hydrogels may be defined as crosslinked three-dimensional polymer networks swollen with water or biological fluids in the presence of nanoparticles
In this work we report the results obtained for sodium carboxymethyl cellulose/poly(acrylamide-co2-acrylam-ido-2-methylpropane sulphonic acid) (NaCMC/ poly(AAm-co-AMPS) semi-IPN hydrogels designed as a new antimicrobial biomaterial
Acryl amide and AMPS were copolymerized in the presence of NaCMC to obtain NaCMC/poly (AAm-co-AMPS) semi-IPN hydrogels, where the NaCMC chains are randomly distributed throughout the gel networks
Summary
Nanocomposite polymer hydrogels may be defined as crosslinked three-dimensional polymer networks swollen with water or biological fluids in the presence of nanoparticles. The design and development of such materials containing metallic nanoparticles have scientific and technological research interests in recent years due to their unique and versatile properties [1,2,3,4,5] These properties lead to potential applications in the field of numerous physical, biological, biomedical, and pharmaceutical sectors [6,7,8,9,10,11,12,13] as well as optical, electrical, chemical, and data storage [14,15,16,17,18]. Various strategies have been employed to prepare nanocomposites containing silver nanoparticles with controlled size One such effective approach reported by Wang et al [30,31,32] is the in situ reduction of metal ions in the hydrogel networks. Silver containing NaCMC/ poly(AAm-co-AMPS) samples were characterized by their structural characteristics, swelling, UV-Vis, TGA, X-RD, and SEM as well as by their antimicrobial performances
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