title: Investigation on radiation degradation of carboxymethylcellulose by ionizing irradiation.
abstract: This study was done to compare the effects of irradiations with gamma-rays and electron beams, on the viscosity of the carboxymethylcellulose (CMC), on the functional groups of CMC, and on the production of radicals. It was observed that the relative viscosities decreased as the irradiation doses increased, but the decrease was more significant when irradiation with gamma rays. FT-IR spectra showed no significant difference between the gamma-ray and the electron beam irradiated samples. ESR spectra showed that the gamma-ray irradiation produced more radicals than electron beam irradiation in CMC.
authors.affiliation: Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 580-185, Republic of Korea.
authors.forename: Hee-Sub
authors.initials: HS
authors.lastname: Lee
authors.forename: Jong-Il
authors.initials: JI
authors.lastname: Choi
authors.forename: Jae-Hun
authors.initials: JH
authors.lastname: Kim
authors.forename: Kwang-Won
authors.initials: KW
authors.lastname: Lee
authors.forename: Young-Jin
authors.initials: YJ
authors.lastname: Chung
authors.forename: Mee-Hye
authors.initials: MH
authors.lastname: Shin
authors.forename: Myung-Woo
authors.initials: MW
authors.lastname: Byun
authors.forename: Myung-Gon
authors.initials: MG
authors.lastname: Shin
authors.forename: Ju-Woon
authors.initials: JW
authors.lastname: Lee
mesh_terms: D002266:Carboxymethylcellulose Sodium / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D004583:Electrons; D005609:Free Radicals; D005720:Gamma Rays; D011839:Radiation, Ionizing; D014783:Viscosity / Q000528:radiation effects
chemical_list: D005609:Free Radicals; D002266:Carboxymethylcellulose Sodium