刘颖,耿丹丹,魏敏,刘柳,石治强

• 1:四川省农业科学院生物技术核技术研究所

摘要(Abstract)：

为合成可应用于农业领域的化学节水制剂,以丙烯酸(AA)、丙烯酰胺(AM)、羧甲基纤维素钠(CMCNa)为原材料,N,N’-亚甲基双丙烯酰胺(NMBA)为交联剂,通过~(60)Co-γ射线引发合成高吸水树脂。实验确定了高吸水树脂的最佳制备条件,并对不同的阳离子浓度、压力、环境温度等环境条件下的高吸水树脂的吸水性能进行了分析讨论,还进一步分析了高吸水树脂的吸液速度及在土壤中的保水性能。结果表明:高吸水树脂的最佳制备条件为单体配比m(AA)∶m(AM)∶m(CMCNa)=18∶2∶3,交联剂用量为单体总质量的0.2%,吸收剂量为8.82 kGy;不同阳离子溶液对高吸水树脂的吸水倍率的影响是不一样的,对高吸水树脂吸水抑制作用从大到小依次为Fe~(3+)>Mg~(2+)>Na~+,因此在施用高吸水树脂时应避免与高价阳离子共混施用;随着环镜压力、温度的增加,高吸水树脂的吸水倍率、保水率均不断下降。制备的羧甲基纤维素类高吸水树脂能够有效减少土壤水分流失,提高土壤的含水量,可为农业抗旱提供技术支持。

关键词(KeyWords)： 高分子合成化学;高吸水树脂;~(60)Co-γ射线;保水性能;阳离子;土壤

Abstract:

Keywords:

基金项目(Foundation): 四川省科技计划项目(2017NZZJ013);; 四川省财政创新能力提升工程计划项目(2016GYSH-001)

作者(Author): 刘颖,耿丹丹,魏敏,刘柳,石治强

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