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Synthesis and characterisation of starch grafted superabsorbent via 10 MeV electron-beam irradiation

文献类型： 外文期刊

作者： Zhang, Sufen 1 ; Wang, Wei 1 ; Wang, Haiyan 1 ; Qi, Wenyuan 2 ; Yue, Ling 2 ; Ye, Qingfu 1 ;

作者机构： 1.Zhejiang Univ, Minist Agr, Inst Nucl Agr Sci, Key Lab Nucl Agr Sci, Hangzhou 310029, Zhejiang, Peoples R China

2.Shanghai Acad Agr Sci, Shanghai 201106, Peoples R China

关键词： Graft copolymerisation;Electron beam irradiation;Superabsorbent;Starch;Acrylamide

期刊名称：CARBOHYDRATE POLYMERS （ 影响因子：9.381； 五年影响因子：8.678 ）

ISSN：

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收录情况： SCI

摘要： A starch-graft-polyacrylamide (St-g-PAM) superabsorbent crosslinked by N,N-methyl bisacrylamide (MBA) was prepared using 10 MeV simultaneous electron beam irradiation at room temperature and subsequent alkaline hydrolysis. The effects of the irradiation dose, acryliamide-to-anhydroglucose unit (AM-to-AGU) ratio and crosslinker amount on the properties of the obtained polymers were evaluated. The structure of the graft copolymer was confirmed by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). Optimisation treatments were carried out and found for a total dose of 8 kGy, an AM-to-AGU ratio of 4.5 mol mol~(-1) and a crosslinker-to-AM ratio of 0.4% mol mol~(-1). The obtained superabsorbent polymer showed the maximum absorptions of 1452gg~(-1) and 83 g g~(-1) for distilled water and saline solution, respectively (relative to its own dry weight). The results suggest 10 MeV electron beam irradiation is more efficient than γ-ray irradiation due to its higher energy and dose rate.

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