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以废弃羊毛为主要原料,采用溶液聚合法制备了羊毛角蛋白接枝聚丙烯酸-丙烯酰胺高吸水性树脂。详细探讨了羊毛角蛋白含量、丙烯酸比例、反应温度、交联剂和引发剂等条件对合成树脂吸水性能的影响。结果显示,当角蛋白占比为5 wt%,丙烯酸比例为70%,反应温度为70℃,交联剂用量为0.1 wt%,引发剂用量为0.8 wt%时,改性树脂吸水倍率最好。另外,采用红外光谱、全质构仪和吸水速率对角蛋白改性前后的产物进行了结构分析和性能测试。结果显示,羊毛角蛋白的引入可以提高树脂的强度、吸水速率和耐盐能力。
Using waste wool as the main raw material, wool keratin-grafted polyacrylic acid-acrylamide superabsorbent was prepared by solution polymerization. The effects of wool keratin content, acrylic acid ratio, reaction temperature, crosslinking agent and initiator on the water absorption of synthetic resin were discussed in detail. The results showed that when the proportion of keratin is 5 wt%, the proportion of acrylic acid is 70%, the reaction temperature is 70 ℃, the amount of crosslinking agent is 0.1 wt% and the amount of initiator is 0.8 wt%, the water absorption capacity of modified resin is the best . In addition, the structure and performance of the products before and after modified by keratin were tested by infrared spectroscopy, total mass analyzer and water absorption rate. The results show that the introduction of wool keratin can improve the resin strength, water absorption rate and salt tolerance.