腐植酸钠/聚N-异丙基丙烯酰胺/粘土杂化水凝胶的合成及脱色性能

以N-异丙基丙烯酰胺单体、粘土和腐植酸钠为原料合成了温敏腐植酸钠/聚N-异丙基丙烯酰胺/粘土（SH/PNIPA/clay）系列水凝胶。用红外光谱分析仪对其内部相互作用进行了研究，并用紫外可见分光光度计对水凝胶吸附-解吸亚甲基蓝的性能进行了测试。实验结果表明凝胶中SH与PNIPA形成了氢键;凝胶对亚甲基蓝（MB）的吸附和解吸能力受腐植酸钠的含量、粘土含量、亚甲基蓝的起始浓度和温度的影响。２％粘土含量和低温条件有利于凝胶吸附和解吸。

Synthesis and Decoloring Properties of Sodium Humate / Polyisopropylacrylamide Hydrogels

Abstract：A series of sodium humate/polyisopropylacrylamide/clay (SH/PNIPA/clay) hydrogels were synthesized by solution polymerization using acrylamide, clay and sodium humate(SH) as raw materials, ammonium persulfate (APS) as the initiator and N , N' – methylenebisacrylamide(MBA) as the crosslinker. Their swelling property and decoloring property were examined. Experiment results show that there exist hydrogen bonding between SH and PNIPA; the absorption and desorption of methylene blue(MB) for hydrogels were influenced by temperature, SH content, clay content and initial MB concentration. Low temperature and 2% clay content favor the absorption and desorption.