淀粉基接枝丙烯酸钠复合高吸水树脂材料的制备及性能测试  

Preparation and Performance Test of Starch-based Grafted Sodium Acrylate Composite Super Absorbent Resin Material

作　　者：马砺 刘西西 周莎莎 于文聪 刘尚明 黄霄 MA Li;LIU Xixi;ZHOU Shasha;YU Wencong;LIU Shangming;HUANG Xiao(College of Safety Science and Engineering,Xi’an University of Science and Technology,Xi’an 710054,China)

机构地区：[1]西安科技大学安全科学与工程学院,西安710054

出　　处：《材料导报》2021年第22期22172-22177,共6页Materials Reports

基　　金：国家重点研发项目(2018YFC0808104)。

摘　　要：以丙烯酸和可溶性淀粉为主要原料,过硫酸铵为引发剂,N-N′-亚甲基双丙烯酰胺为交联剂,丙烯酰胺为单体,采用水溶液聚合法合成高吸水树脂(SAR)。通过设计L25(5^(5))正交试验,确定SAR制备条件,并分别添加适量高岭土、蒙脱土、锂皂石制备复合高吸水性树脂。利用FT-IR和SEM-EDS、TG等对复合高吸水性树脂进行表征。考察复合高吸水性树脂的吸液性能与保水性。SAR实验条件为:丙烯酰胺与淀粉质量比5∶4、合成温度45℃、引发剂0.13 g、交联剂0.01 g、氢氧化钠9 g。结果表明:此条件下的SAR吸水倍率最大为179.5 g/g,吸盐倍率为70.75 g/g。FT-IR和SEM-EDS结果显示树脂已成功制备。无机物高岭土、蒙脱土、锂皂石的加入提高了SAR的吸液性能及热稳定性,其中含高岭土SAR的吸水倍率和吸盐倍率均达到最大,吸水倍率为245.0 g/g,吸盐倍率为83.3 g/g。Using acrylic acid and soluble starch as the main raw materials,ammonium persulfate as the initiator,N-N′-methylenebisacrylamide as the crosslinking agent,and acrylamide as the monomer,the super absorbent resin(SAR)is synthesized by aqueous solution polymerization.The L25(5^(5))orthogonal test was designed to determine the SAR preparation conditions,and appropriate amounts of kaolin,montmorillonite,and laponite were respectively added to prepare composite super absorbent resin.Use FT-IR,SEM-EDS,TG,etc.to characterize the composite super absorbent resin.The liquid absorption and water retention of the composite super absorbent resin were investigated.The SAR experiment conditions were following:the mass ratio of acrylamide starch was 5∶4,the synthesis temperature was 45℃,the initiator was 0.13 g,the crosslinking agent was 0.01 g,and the sodium hydroxide was 9 g.The results showed that under this condition,the maximum water absorption rate of SAR was 179.5 g/g,and the salt absorption rate was 70.75 g/g.FT-IR and SEM-EDS results show that the resin has been successfully prepared.The addition of inorganic kaolin,montmorillonite,and laponite improves the liquid absorption performance and thermal stability of SAR.The water absorption rate and salt absorption rate of SAR containing kaolin both reach the maximum,while the water absorption rate is 245.0 g/g and salt absorption rate is 83.3 g/g.

关 键 词：可溶性淀粉 水溶液聚合 高吸水性树脂 无机物 

分 类 号：TQ324.8[化学工程—合成树脂塑料工业]