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从提高高吸水性树脂的耐盐性出发,以硝酸铈铵为引发剂,N,N′-亚甲基双丙烯酰胺为交联剂,采用水溶液聚合法,制备了黄原胶接枝丙烯腈耐盐型高吸水性树脂.通过单因素分析法考查了引发剂用量、碱用量、聚合温度、交联剂用量等因素对产物吸水性能的影响.利用红外光谱对产物结构进行了表征.结果表明:黄原胶与丙烯腈发生了接枝聚合反应,所得树脂对蒸馏水的吸收倍率可达1156g.g-1,对0.9%NaC l溶液的吸收倍率可达518g.g-1,是一种耐盐型高吸水性树脂.预期在农业、生理卫生等领域具有较高的应用价值.
In order to improve the salt tolerance of superabsorbent resin, aqueous solution polymerization was carried out using ceric ammonium nitrate as initiator and N, N’-methylenebisacrylamide as cross-linking agent to prepare xanthan gum grafted acrylonitrile Salt-tolerant superabsorbent resin.The influence of initiator amount, base amount, polymerization temperature and the amount of cross-linking agent on the water-absorbing properties of the product was investigated by single factor analysis.The structure of the product was characterized by infrared spectroscopy : Xanthan gum and acrylonitrile graft polymerization occurred, the resulting resin absorption rate of distilled water up to 1156g.g-1, 0.9% NaCl solution absorbance up to 518g.g-1, is a kind of resistance Salt-based superabsorbent resin is expected to have high application value in agriculture, physiology and other fields.