摘要
首先用微波加热法(400 W,90℃)将杉木粉溶解在离子液体氯代1-(2-羟乙基)-3-乙基咪唑([HeEIM]Cl)中,再将溶解体系和丙烯酰胺(AM)原位共混,在过硫酸钾热引发条件下使溶解后的木粉和丙烯酰胺在离子液体介质中接枝共聚,制备了改性絮凝剂AM-g-wood,并用FTIR和XRD对其化学结构和结晶结构进行表征,比较研究离子液体和水分别作为反应介质对接枝共聚的影响,考察絮凝剂AM-g-wood对煤泥污水和陶土污水的絮凝效果。FTIR和XRD结果表明杉木粉与丙烯酰胺发生了接枝反应,其中以离子液体为介质制备的共聚物性能远远优于水介质,该絮凝剂对较细颗粒的陶土污水处理效果要优于煤泥污水,特别是在无机絮凝剂氯铝盐的协同作用下,絮凝效果更好。
Fir powder was dissolved in ionic liquid of 1-（2-hydroxylethyl）-3-ethyl imidazolium chloride（Cl）by microwave heating（400 W,90℃）,then acrylamide（AM）was grafted onto the dissolved wood with initiator of K2S2O8 in the dissolution system to prepare the graft copolymer AM-g-wood,which was a novel modified flocculant.The chemical structure and crystalline structure of the flocculant were determined by FTIR and XRD respectively.The effects of ionic liquid and aqueous medium on graft copolymerization were studied.The flocculation properties of AM-g-wood on coal slurry water and argil wastewater were investigated.The results of FTIR and XRD showed that graft copolymerization occurred between AM and fir powder.The performance of AM-g-wood prepared in ionic liquid medium was far superior to that prepared in aqueous medium,and the graft copolymer was more suitable for treating argil wastewater with tiny particles.The effect of flocculation was better when inorganic flocculant of poly aluminum chloride（PAC）was used as synergistic agent.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2011年第4期1177-1181,共5页
CIESC Journal
关键词
杉木粉
离子液体
丙烯酰胺
接枝共聚
絮凝性能
fir powder
ionic liquid
acrylamide
graft copolymerization
flocculation properties
