新型淀粉接枝双氰胺甲醛缩聚物絮凝剂的制备及反应机理研究  

Preparation of Starch Grafting Dicyandiamide Formaldehyde Condensated Polymer and the Study of Its Synthesis Mechanism

作　　者：张恒[1,2,3] 王晓平[1] 胡振华[1] 张岩冲[3] 王传路 

机构地区：[1]青岛科技大学化工学院,山东青岛266042 [2]南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京210037 [3]华南理工大学制浆造纸工程国家重点实验室,广东广州510640

出　　处：《中国造纸学报》2014年第3期15-19,共5页Transactions of China Pulp and Paper

基　　金：青岛市科技发展计划(12-1-4-3-(28)-jch);江苏省制浆造纸科学与技术重点实验室开放基金(201306);制浆造纸工程国家重点实验室(华南理工大学)开放基金(201474)

摘　　要：阳离子型接枝淀粉絮凝剂是一种高效环保、安全稳定、经济适用的絮凝剂,但其制备工艺较为复杂,同时,用于接枝的阳离子型乙烯基单体种类较少。为此,设计并制备了一种淀粉基接枝双氰胺甲醛缩聚物絮凝剂,并通过红外分析确定了其分子结构和特征基团。实验结果表明,利用这种絮凝剂(用量为7.5%)处理2 g/L的尤丽素红E-B染料模拟废水,脱色率达到98.3%;在相同用量下,该絮凝剂可使制浆中段废水的COD从200 mg/L降至34 mg/L,COD去除率达到83.0%。Cationic grafting starch is a kind of efficient,environmentally friendly,stable and affordable flocculants,but it is relatively hard to prepare and the available types of vinyl monomer are less.A kind of flocculant made of starch grafting dicyandiamide formaldehyde condensated copolymer was designed and prepared,and the molecular structure and the characteristic group of the new flocculant were confirmed by infrared spectrogram and reaction mechanism analysis.The optimal dosage of this flocculant for disposing waste water of 2 g/L Ure pigment red E-B dye and papermaking waste water after biochemical treating was 7.5%,and the decolouring rate and the removal rate of COD were 98.3% and 83.0%,respectively.

关 键 词：双氰胺甲醛缩聚物 淀粉 絮凝剂 接枝共聚 

分 类 号：TS727.2[轻工技术与工程—制浆造纸工程]