摘要
本文研究了以玉米淀粉为基材 ,与丙烯腈 (聚丙烯酰胺的降解回收料 )进行接枝共聚 ,经水解制得弱阴离子型絮凝剂 ,并进一步羟甲基化和磺化 ,从而合成强阴离子型天然高分子改性絮凝剂 -SAH。在探讨接枝共聚反应机理的基础上 ,重点阐明了引发剂浓度、原料投料比、反应温度、反应时间等对接枝率和接枝效率的影响。把SAH应用于印染废水及造纸厂污水的处理、COD去除率和浊度去除率都达到 90 %以上 。
This paper describes corn starch as base material reacts with acrylnitrile which is the recovery material of degradated polyacrylamide by using the method of graft copolymerization, then the weak anion flocculant is produced by hydrolysis reaction. After hydroxymethylation and surfonation reaction, the strong anion inartificial high molecular flocculant (SAH) is synthesized. We investigate the principle of graft copolymerization reaction and particularly study the effect on graft ratio and graft efficiency of initiator's concentration, starch/monomer ratio, reaction temperature and time. When SAH is used to deal with the wastewater of the dying factory and the paper factory, the removal rates of turbidity and COD of the wastewater are both over 90%. The result of the flocculant performance shows that it has better flocculating effect.
出处
《皮革化工》
2003年第3期17-21,共5页
Leather Chemicals
关键词
淀粉
丙烯腈
接枝共聚
絮凝剂
starch
acrylnitrile
graft-copolymerization
flocculant
