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以粘胶纤维生产过程中产生的半纤维素废碱液为基础原料,丙烯酸(AA)为接枝单体,N,N'-亚甲基双丙烯酰胺(NMBA)为交联单体,(NH4) 2S2O8-NaHSO3为氧化还原引发体系,采用水溶液聚合法合成了半纤维素-AA高吸水树脂.在此基础上,引入三乙二醇二丙烯酸酯(TEGDA)对其进行共聚改性,合成半纤维素-AA-TEGDA高吸水树脂,考察了单体TEGDA添加量对树脂吸水率的影响,并对比分析了树脂改性前后的吸盐水率和吸水速率.此外,通过红外光谱分析及扫描电镜分析对2种树脂进行了结构表征.结果表明:TEGDA改性合成的高吸水树脂较半纤维素-AA高吸水树脂具有较高的吸水率和较快的吸水速率,吸盐水率也有所提高.“,”The hemicellulose-AA super absorbent resin is prepared by solution polymerization with hemicellulose alkali liquid as the raw material,acrylic acid as grafting monomer,N,N'-methylene bisacrylamide (NMBA) as cross linking agent and (NH4)2S2Os-NaHSO3 as the redox initiation system,which is then modified by adding striethylene glycol diacrylate (TEGDA) monomer.The effect of TEGDA on the coefficient of water absorption of hemicellulose-AATEGDA resin absorbent is explored.The coefficient of salt absorption and water absorption rate of hemicellulose-AA super absorbent resins before and after modification are compared.Infrared spectroscopy and scanning electron microscopy are also used to characteirze the obtained super absorpbent resins.The results show that TEGDA modified hemicellulose-AA super absorbent resin has higher water absorption and faster water absorption rate.The coefficient of salt absorption is also improved.