抗盐性淀粉接枝高吸水性树脂的结构与性能研究

以硝酸铈铵作引发剂,N,N 亚甲基 双丙烯酰胺(MBAA)作交联剂,采用玉米淀粉与丙烯酰胺、丙烯酸在水溶液中接枝共聚,合成了高吸水性树脂。该高吸水性树脂的交联键为C—N键,具有较高的热稳定性,长期使用温O等极性基团,亲水性强,度可达70℃。高吸水性树脂中含有—OH、—COOH、—COO—、—NH2、—NH—、C对水分子具有很强的包络作用。引入大量的非离子性亲水基团———酰胺基,从而该高吸水树脂的抗盐的能力在相同的盐浓度下提高2.5～5倍。实验还得出该超强吸水性树脂的保水性能也非常优越。

Study on the structure and properties of starch of salt resistance grafting supper water absorption resin

In this paper,the supper water absorption resin was synthesized,which starch,acrylamide and acrylic acid were grafting copolymerization in water.Using (NH_4)_2Ce(NO_3)_6 as initiator and N,N-methylene-bis acrylamide as cross linking agent.Its temperature may up to 70 ℃ when it was used continuously,for the cross bound C-N of it have higher thermal stability.It contained -OH (-COOH-)-COO-NH_2-NH- COpolar group,and thus its hydrophivicity is strong and bundled water molecule strongly.The non-ion hydrophile ground -NH_2 was used extensivlg,so (it's) salt resistance ability increased by 2.5～5 times in same salt solution,and also has good performance of keeping water.