明胶基高吸水树脂的制备及性能研究

Preparation and Properties of Gelatin-based Super Absorbent Resin

为改善树脂的吸水性能,提高树脂的保水能力,以明胶(Gel)和2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为原料,采用微波辐射法,通过接枝共聚合成了Gel-g-PAMPS高吸水树脂,利用SEM和FTIR对树脂进行了表征。考察了合成条件对高吸水树脂吸水倍率的影响,研究了树脂在不同盐溶液的溶胀行为及树脂的保水性能。结果表明Gel和AMPS之间发生了接枝共聚反应,最佳合成条件下树脂对去离子水和生理盐水的吸水倍率分别为630g/g和76g/g。在盐溶液浓度为60mmol/L的NaCl、CaCl 2、FeCl 3溶液的吸水倍率分别为116、63、29g/g。适量引入Gel可以改善树脂的吸水性能,树脂具有良好的保水能力。

In order to improve the water absorption and water holding capacity of the resin,the Gel-g-PAMPS super absorbent resin with gelatin(Gel)and 2-acrylamide-2-methyl propylsulfonic acid(AMPS)used as raw materials was formed by graft copolymerization through microwave radiation method,which was characterized by SEM and FTIR.The effects of synthetic conditions on the water absorption ratio of the super absorbent resin were investigated,and the swelling behavior in different salt solutions and the water retention property of the resin were studied.The results showed that graft copolymerization occurred between Gel and AMPS,and the absorbency of the resin to deionized water and normal saline was respectively 630g/g and 76g/g,under the optimal synthetic conditions.In NaCl,CaCl 2 and FeCl 3 solutions with a salt concentration of 60mmol/Lthe water absorption ratios were 116,63 and 29g/g respectively.An appropriate amount of Gel being applied is able to improve the water absorption of the resinand make it have a good water retention ability.