摘要
以丙烯酰胺(AM)、二甲基二烯丙基氯化铵(DMDAAC)为接枝共聚单体,分别采用热引发、光引发和超声波引发方式制备壳聚糖基絮凝剂CS-P(AM-DMDAAC)。采用红外光谱和扫描电镜(SEM)对三种不同引发方式制备出的絮凝剂进行表征。以高岭土模拟水样为处理对象,采用三种絮凝剂进行絮凝实验,结果表明光引发下制备产品的絮凝效果要明显优于其它两个产品,同时分析了出现这一现象的原因。
The acrylamide(AM) and dimethyldiallyl ammonium chloride(DMDAAC) were used as grafted monomers,and heat-initiation,ultraviolet-initiation and ultrasonic-initiation were used to prepare chitosan based flocculant CS-P( AM-DMDAAC). FT-IR and SEM were used to characterize the structures of the three flocculants.Kaolin suspension was used to compare the performances of the three flocculants. Results indicated that flocculant prepared by UV-initiation performed better than the other two products. The reason of this performance was analyzed.
引文
[1]孙永军,任梦娇,徐炎华,等.光聚合壳聚糖基絮凝剂及其絮凝性能[J].土木建筑与环境工程,2016,38(3):58-64.
[2]宗传晖,徐国园,孙熠昂,等.壳聚糖接枝共聚改性最新研究进展[J].高分子通报,2017(5):19-28.
[3]王锦涛,姚春才,谢思思.微波辐射下壳聚糖-丙烯酰胺接枝物的合成及其絮凝性能研究[J].生物质化学工程,2010,44(4):17-20.
[4]Pennetta de Oliveira L,Gumfekar S P,Lopes Motta F,et al.Dewatering of Oil Sands Tailings with Novel Chitosan-Based Flocculants[J].Energy&Fuels,2018,32(4):5271-5278.
[5]Saleh A S,Ibrahim A G,Abdelhai F,et al.Preparation of poly(chitosan-acrylamide)flocculant using gamma radiation for adsorption of Cu(Ⅱ)and Ni(Ⅱ)ions[J].Radiation Physics and Chemistry,2017,134:33-39.
[6]Molatlhegi O,Alagha L.Adsorption characteristics of chitosan grafted copolymer on kaolin[J].Applied Clay Science,2017,150:342-353.
[7]Lu X,Xu Y,Sun W,et al.UV-initiated synthesis of a novel chitosanbased flocculant with high flocculation efficiency for algal removal[J].Sci Total Environ,2017,609:410-418.
[8]肖雪峰,孙永军,沈浩,等.CSC-P(AM-AA)重金属捕集絮凝剂的光谱表征及其对重金属去除研究[J].光谱学与光谱分析,2018,38(6):1809-1813.