环保型木薯淀粉接枝丙烯酸共聚物的合成研究

Study on Synthesis of Environmentally Friendly Resin of Tapioca Grafted Acrylic Acid

以N,N′-亚甲基双丙烯酰胺为交联剂、过硫酸铵为引发剂,采用水溶液聚合法制备了木薯淀粉接枝丙烯酸高吸水性树脂。考察了淀粉含量、中和度、引发剂用量、交联剂用量等因素对反应的影响。结果表明:在木薯淀粉含量为10%,引发剂用量为0.3%,交联剂用量为0.025%,丙烯酸与氢氧化钠的中和度为85%的条件下,制备得到的吸水性树脂吸水率达1355 g.g-1,其吸水速率快、加压保水能力强、热稳定性好。

Tapioca grafted acrylic acid based high water absorption resin was prepared using ammonium persulfate as initator and epichlorohydrin as crosslinker. The effects of the polymerization conditions on properties of high water absorption resin were examined. The result showed that the water absorption rate of resin was more than 1355 g · g^-1 under the polymerization conditions including the tapioca content 10%, the dosage of initiator 0.3 %, the dosage of crosslinker 0. 025% and the neutralization degree 85 %.