氧化-还原引发合成纳米氢氧化铝-聚丙烯酰胺复合絮凝剂及其表征研究  

Synthesis and characterization of nano aluminium hydroxide-polyacrylamide hybrid flocculant

作　　者：粟燕[1] 杨红芸[1] 陈振玲[2,3] 

机构地区：[1]凯里学院,凯里556011 [2]中国民用航空局民用航空医学中心,北京100123 [3]民航总医院,北京100123

出　　处：《化工新型材料》2016年第7期171-173,共3页New Chemical Materials

基　　金：国家自然基金(U1333132);中国民用航空局重大科技专项(MHRD20140101);贵州省科技厅;黔东南州科技局;凯里学院科技联合基金项目(黔科合LH字[2014]7236)

摘　　要：首先合成了Al(OH)_3微纳米颗粒,然后以氧化-还原引发体系((NH_4)_2S_2O_4-NaHSO_4)合成了纳米Al(OH)_3-聚丙烯酰胺(PAM)复合絮凝剂。研究考察了反应物浓度对纳米颗粒粒径的影响,以及反应温度、引发剂用量、Al(OH)_3粒径等因素对复合PAM合成的影响,结果表明:纳米Al(OH)_3的引入使得复合聚合物分子量显著提高。电导和热失重测量结果表明,复合物PAM的端基(—SO_4^(2-))与带正电荷的Al(OH)_3纳米颗粒以离子键结合。扫描电镜结果显示复合PAM呈无晶形堆积状,能谱分析结果表明Al(OH)_3微纳米颗粒与丙烯酰胺形成复合物。Aluminium hydroxide nanoparticles was prepared.And then aluminium hydroxide-polyacrylamide hybrid flocculant was prepared from in-situ polymerization of acrylamide and aluminium hydroxide nanoparticles.The effects of synthesis temperature,concentration of initiator,and particle size of nanoparticles on the molecular weight of hybrid were investigated.The results indicated that the intrinsic viscosity of hybrid was notably larger than that polyacrylamide at the same conditions.The results of conductivity and thermo-gravimetric curves of hybrids showed that the ionic bond was formed between the positive particle of aluminium hydroxide and the negative end（—SO4^2-）of polyacrylamide chain.The scanning electron microscope results indicated that aluminium hydroxide nanoparticles and acrylamide formed hybrids.

关 键 词：纳米颗粒 聚丙烯酰胺 氢氧化铝 絮凝剂 无机-有机杂化 

分 类 号：TQ317[化学工程—高聚物工业] X758[环境科学与工程—环境工程]