淀粉的物理化学状态对淀粉接枝高吸水性树脂吸水性能的影响

Study on the Influence of Starch Physical and Chemical State on the Absorbability of Starch Grafted Superabsorbents

主要讨论了淀粉在参与接枝聚合反应前的物理和化学状态对最终淀粉接枝高吸水性树脂的吸水性能的影响。实验说明 ,淀粉在参加接枝聚合反应之前进行一定温度范围条件下的预糊化处理有利于最终产品的吸水性能 ;淀粉经过阳离子化后接枝丙烯酸 (钠 )对强电解质溶液的吸收倍率高于原淀粉接枝产品。

Superabsorbents starch grafted sodium polyacrylate was synthesized by inverse suspension polymerization, using toluene as the continuous phase, potassium persulfate as the initiator. The effect of reaction parameters, such as starch pretreatment temperature, neutralization degree of monomer, reaction time and temperature, concentration of initiator, molar ratio of monomer and starch, on water absorbency of the starch grafted polymer was studied. The effects of the last two parameters were investigated by uniform design method, and the prediction equation was obtained.