应用化学 ›› 1997, Vol. 0 ›› Issue (5): 15-18.

• 研究论文 • 上一篇    下一篇

反相悬浮聚合法合成超强吸水剂

田大听, 过俊石, 谢洪泉   

  1. 华中理工大学化学系, 武汉 430074
  • 收稿日期:1996-12-01 修回日期:1997-06-16 出版日期:1997-10-10 发布日期:1997-10-10

Synthesis and Properties of Copolymers of Acrylic Salt and Acrylamide as Superabsorbents by Inverse Suspension Polymerization

Tian Dating, Guo Junshi, Xie Hongquan   

  1. Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074
  • Received:1996-12-01 Revised:1997-06-16 Published:1997-10-10 Online:1997-10-10

摘要: 以两性高分子作悬浮稳定剂,用反相悬浮聚合法合成了聚(丙烯酸盐-丙烯酰胺)类超强吸水剂。研究了交联剂、稳定剂、引发剂等用量、中和程度、单体组成及链转移剂等聚合条件对吸水剂吸水性能的影响。得到了吸蒸馏水1050mL/g及吸0.9%NaCl溶液86mL/g的超强吸水剂。此外,还比较了含不同反离子的聚丙烯酸类吸水剂的吸水性能

关键词: 反相悬浮聚合, 吸水剂, 丙烯酸, 丙烯酰胺

Abstract: Poly(acrylic salt-acrylamide)as superabsorbents were synthesized by means of inverse suspension polymerization, in which the suspension stabilizer was an amphiphilic copolymer of acrylic acid with its octadecyl ester. Polymerization conditions such as amount of crosslinking monomer, stabilizer, initator, comonomer, neutralization degree of acrylic acid and chain transfer agent on the water-absorbency of the absorbent were studied. The optimum absorbency of the superabsorbent obtained is 1050 mL/g and 86 mL/g in distilled water and 0.9% NaCl solution, respectively. The effect of different counter ions of PAA on the absorbency was also studied.

Key words: inverse suspension polymerization, superabsorbent, acrylic acid, acrylamide