原子能科学技术Issue(2)：228-233,6.DOI:10.7538/yzk.2014.48.02.0228
辐射合成法合成明胶类水凝胶及其性能研究
Radiation Synthesis and Characterization of Gelatine Category Hydrogel
摘要
Abstract
The hydrogels based on gelatine cross-linked with sodium carboxymethyl cellulose (CMC-Na) and polyvinylpyrrolidone (PVP) were synthesized through 60 Co γ-ray irradiation , and the swelling ability , pH-sensitivity , gelatine fraction and the absorbing ability of Cr were measured by the Soxhlet extraction device , Uv-vis spectrophotometer and atomic absorption spectrometer , respectively . The result indicates that it is easy to synthesize hydrogels of gelatine/CMC-Na/PVP with monomer mass proportions of 4∶1∶2 ,4∶1∶5 and 2∶1∶5 at the absorbed doses of 15 ,25 ,35 and 45 kGy at the dose rate of 83 Gy/min ,respectively .It shows that the swelling behavior of hydrogels becomes different w hen either the monomer proportion of raw materials or the absorbed doses vary .The swelling ratio (SR) of hydrogels can be up to 56 at pH= 7 ,w hile the minimal value is 7 at pH =1 ,w hich indicates that the SR of hydrogel is sensitive to pH . The hydrogel of PVP will not be degraded after many years ,but the hydrogels of gelatine/CMC-Na/PVP will be degraded within one month . It indicates that the degradation of hydrogels can be accelerated as the nature polymer can be degraded into the hydrogels .The adsorptive capacity of Cr (Ⅵ) is up to 0.539 g/g .关键词
天然高分子/水凝胶/交联/溶胀率/Cr(Ⅵ)Key words
nature polymer/hydrogel/cross-linking/swelling ratio/Cr(Ⅵ)分类
化学化工引用本文复制引用
杨桂霞,伍晓利,俞祥忠,李宗军,安友,李晓燕,孙国芳..辐射合成法合成明胶类水凝胶及其性能研究[J].原子能科学技术,2014,(2):228-233,6.基金项目
绵阳市应用技术研究与开发资金资助项目 （）
