摘要
首先用微波加热法(400W,90℃)将微晶纤维素(MCC)溶解于离子液体氯代1-烯丙基-3-乙基咪唑([AEIM]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纤维素和丙烯酰胺在离子液体均相介质中接枝共聚,制备了改性絮凝剂AM-g-MCC,比较、研究了离子液体和水分别作为反应介质以及反应液比对接枝共聚的影响,考察了絮凝剂AM-g-MCC对煤泥水的絮凝效果。结果表明,纤维素与丙烯酰胺发生了接枝共聚反应,且以离子液体为介质制备的共聚物的单体转化率、接枝效率、特性黏数等性能远远优于水介质,该絮凝剂对煤泥污水处理效果良好,特别是在无机絮凝剂聚合氯化铝(PAC)的协同作用下,絮凝效果更佳。
Microcrystalline cellulose （MCC） was dissolved in ionic liquid of 1-allyl-3-ethyl-imidazolium chloride （ [AEIM] C1） by microwave heating （400W, 90 1Z ） method, then acrylamide （AM） was grafted onto the dissolved MCC to prepare the graft copolymer AM-g-MCC using K2S208 as initiator. Effects of ionic liquid and aqueoumedium and the mass ratio of medium to MCC on graft copolymerization were studied. The flocculation property of AM-g-MCC on coal slurry water was discussed. The results show that graft copolymerization occurrs between AM and MCC. The monomer conversation, graft efficiency and intrinsic viscosity of AM-g-MCC prepared by ionic liquid medium are superior to those by aqueous medium, and the graft copolymer exhibits a good flocculation property on coal slurry water, the effect of floeculation is better using inorganic flocculant of poly aluminum chloride （PAC） as synergistic reaction.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2013年第2期162-164,168,共4页
Polymer Materials Science & Engineering
关键词
纤维素
离子液体
丙烯酰胺
接枝共聚
絮凝性能
cellulose
ionic liquid
acrylamide
graft copolymerization
flocculation property
