Synthesis of 2-methylacrylamide/high-molecular-weight cellulose using gamma ray irradiation and preparation of cryogels for removing anionic dyes

文献类型： 外文期刊

第一作者： Zhang, Shuaifeng

作者： Zhang, Shuaifeng;Li, Li;Zhang, Shuaifeng;Gu, Jun;Fan, Baochao;Li, Li;Li, Bin;Gu, Jun;Fan, Baochao;Li, Bin;Li, Li;Li, Bin

作者机构：

关键词： Cryogel; Colored wastewater; High-molecular-weight cellulose; Gamma ray irradiation; Solubility

期刊名称：CELLULOSE （ 影响因子：6.123； 五年影响因子：6.004 ）

ISSN： 0969-0239

年卷期： 2022 年 29 卷 10 期

页码：

收录情况： SCI

摘要： We report a new method for treating high-molecular-weight cellulose with Co-60 gamma rays to simultaneously graft functional groups onto the natural polymer and promote its solubility. After exposing cellulose to a 40-kilogray dose of gamma rays in the presence of 2-methylacrylamide, numerous amide groups were grafted onto the cellulose chain and its solubility increased. Amide-functionalized cryogels were prepared via the sol-gel method using the irradiated product as a raw material. Compared with 40-kGy-irradiated high-molecular-weight-cellulose cryogel, the amide-functionalized cryogels had relatively high zero-point charge pH values and excellent adsorption capacities with regard to anionic dyes over the pH range 2-10. They were also stable in terms of reusability. Therefore, the 2-methylacrylamide/highmolecular-weight cellulose cryogel has great potential for use in the treatment of colored surface wastewater. The Co-60 gamma ray irradiation technique described herein is a stable and highly efficient method for the preparation of functionalized cellulose products. [GRAPHICS] .

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