^(60)Co-γ射线辐照合成P(AA-co-AM)/FA高吸水性复合材料

Preparation of P(AA-co-AM)/FA Super Water Absorbent Composite by ^(60)Co-γ Irradiation

利用^(60)Co-γ射线引发合成聚丙烯酸/丙烯酰胺/黄腐酸(P(AA-co-AM)/FA)高吸水性复合材料。探讨了在室温下,吸收剂量、黄腐酸的添加量对高吸水性复合材料吸水倍率的影响,研究在60℃环境下的保水率,同时利用红外分析(FTIR)、扫描电镜(SEM)对复合材料进行结构分析。结果表明:高吸水复合材料在去离子水和w=0.9%NaCl溶液中最好吸水倍率分别为437倍、61倍,当黄腐酸添加质量分数为15%时,在60℃环境下放置12h,其保水率为54%。该方法提高了材料的吸水保水性能,克服了传统合成方法污染大、能耗高等问题,合成的高吸水性材料适合制作农林保水剂。

P（AA-co-AM）/FA super water absorbent （SWA） composite have been prepared using γ-irradiation from a 60Co source. The effects of the absorbed dose, amount of fulvic acid on the swelling behavior of the SWA as well as water-retention rate were studied. The structure of SWA was investigated by FTIR and SEM. The results show that the SWA can absorb 437 times in deionized water and absorb 61 times in w=0.9% NaCl solution. The water-retention rate of the SWA is 54% in an environmental temperature of 60 ℃ for 12 h. The SWA which improves the swelling ratio and retention properties, overcome the problems in traditional method of more serious pollution and higher energy consumption. The polymer is suitable for preparing agriculture and forestry super water absorbent.