腐植酸保水剂的制备及性能测试

Synthesis and Characterization of Humic Acid Superabsorbent

[目的]为了提供农林用的优质保水保肥材料。[方法]以丙烯酸-丙烯酰胺和腐植酸为原料,采用水溶液聚合法合成聚(丙烯酸-丙烯酰胺-腐植酸)型多功能复合保水剂,利用红外光谱和吸水倍率对所制备的保水剂进行表征。[结果]制备的腐植酸保水剂具有良好的耐温耐盐性,对蒸馏水的吸收倍率为1 180 g/g,达50%饱和吸水量的时间是6.5 min,达90%饱和吸水量的时间是22.0 min,对0.9%盐水吸收倍率为110 g/g;红外光谱分析表明,腐植酸参与聚合反应,与高吸水树脂接枝到一起,所制备的腐植酸型保水剂是化学键合型腐植酸保水剂。[结论]该工艺制备的保水保肥剂能够很好地适用于农林。

[ Objective ] The research aimed to provide high quality fertilizer and water superabsorbent polymer for agriculture and forestry. [ Method] Humic acid superabsorbent polymer （ P（AA/AM-HA） ） and superabsorbent polymer （ P（AA/AM） ） were synthesized by aqueous solu- tion polymerization method using acrylic acid （AA）, acrylamide （AM） and humic acid （HA） as raw material. P（AA/AM-HA） and P（ AA/ AM） were characterized by Fourier translation infrared spectroscopy. [ Result] P（AA/AM-HA） synthesized had a good saline tolerance. Its water absorbency in distilled water and 0.9% saline solution was 1 180 and 110 g/g, respectively. P（AA/AM-HA） achieved half saturation in 6.5 min and 90% saturation in 22 rain. Graft rization between P（AA/AM） and HA was demonstrated by infrared spectrum. [ Conclusion] The superab- sorbent volvmer synthesized by this method could be used in azxicuhure arid forestry.