title: Characterization of silver nanoparticle in the carboxymethyl cellulose hydrogel prepared by a gamma ray irradiation.
abstract: In this study, carboxymethyl cellulose (CMC) hydrogels were traditionally prepared by gamma-ray with an absorbed dose of 50 kGy from a 60Co source. The CMC hydrogels were absorbed and swelled in silver nitrate aqueous solution (0.01 M) by dipping for 1 hour, and then irradiated by gamma-ray at various doses to form silver nanoparticles (Ag NPs). The UV-Vis analysis indicated that the concentration of Ag NPs was enhanced by increasing of absorbed dose from 1 to 5 kGy in this situ reducing system. The FE-SEM and XPS measurements provided further evidence for the successful formation of Ag NPs. These CMC hydrogels stabilized Ag NPs also have been investigated for inhibiting the growth of Staphylococcus aureus and Escherichia coli strains in liquid as well as on solid growth media. The antibacterial tests indicated that the hydrogels containing Ag NPs have antibacterial activity.
authors.affiliation: Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 1266 Sinjeong-dong Jeongeup-si Jeollabuk-do 580-185, Republic of Korea.
authors.forename: Jong-Seok
authors.initials: JS
authors.lastname: Park
authors.forename: Jia
authors.initials: J
authors.lastname: Kuang
authors.forename: Youn-Mook
authors.initials: YM
authors.lastname: Lim
authors.forename: Hui-Jeong
authors.initials: HJ
authors.lastname: Gwon
authors.forename: Young-Chang
authors.initials: YC
authors.lastname: Nho
mesh_terms: D002266:Carboxymethylcellulose Sodium / Q000737:chemistry* / Q000528:radiation effects; D003460:Crystallization / Q000379:methods*; D005720:Gamma Rays; D020100:Hydrogels / Q000737:chemistry / Q000528:radiation effects; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects*; D010316:Particle Size; D011829:Radiation Dosage; D012834:Silver / Q000737:chemistry*
chemical_list: D020100:Hydrogels; D012834:Silver; D002266:Carboxymethylcellulose Sodium