聚丙烯酸钠的合成

采用均匀设计法设计聚丙烯酸钠树脂的合成实验,考察了单体用量、引发剂用量、交联剂用量及反应温度等因素对树脂吸水倍率的影响。通过回归分析得到树脂吸水倍率的关联式,分析可知引发剂用量、交联剂用量对树脂吸水倍率影响显著。优化的合成条件(质量分数):水50%～60%;单体35%～45%;引发剂0 01%～0 03%;交联剂0 004%～0 008%;反应温度50～70℃。在此合成条件下,吸水倍数可达650～700g/g,吸盐水倍数为80～90g/g。

Synthesis of Sodium Polyacyrlate

The method of uniform design was used to design experiments,for studying influences of concentration of monomer,amount of initiator,and crosslinking agent used and temperature on water absorption of sodium polyacrylate. By using regression analysis,the correlation with water absorption was obtained. Influence of initiator and crosslinking agent were more remarkable.Optimal operation conditions were: water 50%～60%,monomer 35%～45%,amount of initiator 0.01%～0.03%,amount of crosslinking agent 0004%～0008% and temperature 50～70 ℃. Water absorption amount of resin was 650～700 g/g,and salt absorption was 80～90 g/g.