木质素磺酸盐两性高分子聚合物合成及应用  

Synthesis and application of amphoteric macromolecular polymer based on lignosulfonate

作　　者：孙岩峰[1,2] 石永安[3] 张玉苍[3] 赵德丰[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室,辽宁大连116024 [2]杭州吉华化工有限公司,浙江杭州311200 [3]大连工业大学轻工与化学工程学院,辽宁大连116034

出　　处：《大连理工大学学报》2012年第4期469-475,共7页Journal of Dalian University of Technology

基　　金：辽宁省教育厅科学技术研究资助项目(2009A076)

摘　　要：以木质素磺酸盐、丙烯酰胺(AM)、二甲基二烯丙基氯化铵(DMDAAC)为原料,通过接枝共聚,制得木质素磺酸盐两性絮凝剂(LDA),得到了最佳合成工艺条件:反应温度50℃,共聚时间6h,固含量20%,引发剂质量分数0.1%,单体与木质素磺酸盐质量比4∶1,AM与DMDAAC质量比2∶1.产品LDA的特性黏度为635.2mL/g,接枝效率为99.2%,阳离子度为26.8%.利用红外、氢核磁共振和扫描电镜对其结构进行了表征.对4种污水进行絮凝处理,COD均达到排放标准,同时产品具有良好的耐温、耐盐性.A lignosulfonate amphoteric flocculant（LDA） is synthesized by graft copolymerizatlon ot lignosulfonate with acrylamide （AM） and diallyl dimethyl ammonium chloride （DMDAAC）. The optimum reaction conditions are obtained as follows, reaction temperature is 50 °C, copolymerization time is 6 h, solid content is 20%, initiator mass fraction is 0. 1%, mass ratio of monomer to lignosulfonate is 4 ： 1, mass ratio of AM to DMDAAC is 2 ： 1. The intrinsic viscosity of LDA is 635.2 mL/g, the grafting efficiency is 99.2%, cationic degree is 26.8%. The structure is confirmed by IR, 1H NMR and SEM. Four kinds of waste water are treated by flocculation, and their CODs are up to the standards. And the results show that the flocculant can still hold the good flocculation efficiency under the operating conditions of high temperature and high salt.

关 键 词：两性絮凝剂 木质素磺酸盐 二甲基二烯丙基氯化铵 丙烯酰胺 

分 类 号：O625.754[理学—有机化学]