以丙烯酰胺(AM)为主体,同时引入正、负2种电荷基团单体,在盐水介质中采用分散聚合法,成功制备了耐盐型两性絮凝剂(P(AM/AA/DMBAC),简称AAB系列).系统地考察了分散介质、分散剂、单体浓度和链转移剂(次磷酸钠、甲酸钠)用量对两性絮凝剂AAB特性粘数和表观黏度的影响,确定了最佳反应条件为:n(AM)∶n(AA)∶ n(DMBAC)=90∶5∶5,w(单体含量)=13％、w(PDAC) =6％(基于单体总质量)、w(硫酸铵)=25％(基于体系质量)、w(引发剂(VA-044))=0.2％(基于单体总质量)、p(次磷酸钠)=0.05 g/L、p(甲酸钠)=1.0 g/L,反应温度35℃,反应时间24h,并通过絮凝试验评价了该两型絮凝剂的絮凝性能和耐盐性.结果表明,在最佳反应条件下,两性絮凝剂具有较大的特性粘数(5.2 dL/g)和良好的稳定性；在高盐浓度的模拟污水中,两性絮凝剂具有使用剂量小(30×10-6),絮团沉降速率快(2.56 s-1)等优点,表现出优异的絮凝能力和良好的耐盐性.
参考文献
| [1] | RAN Qianping,HUANG Ronghua,MA Juntao.Synthesis of Polyampholytes and Their Uses in Water Treatments[J].Oilfield Chem,2001,18 (2):188-192 (in Chinese).冉千平,黄荣华,马俊涛.两性聚电解质的合成及在水处理中的应用[J].油田化学,2001,18(2):188-192. |
| [2] | LIU Guowei,LIN Yin,ZHANG Xingying.Effect of Different Groups on Efficiency of Amphoteric Flocculant[J].Petrochem Technol,2008,35 (5):507-511 (in Chinese).刘国伟,林荫,张兴英.两性型絮凝剂中不同基团作用的研究[J].石油化工,2008,35(5):507-511. |
| [3] | Xu Z S,Chen Y C,Zhang G J,et al.The Inverse Emulsion Polymerization of Acylamide Using Polystyrene-graftpolyoxyethylene as The Stabilizer[J].J Polym Sci,Part A:Polym Chem,1999,37(15):2719-2725. |
| [4] | CUAN Jianguo,HE Ping,XIE Rongquan.Study of Stability of Inverse Emulsion Polymerization of Acrylic Acid[J].Petrochem Technol,1994,23 (8):514-518 (in Chinese).官建国,何平,谢洪泉.AA反相乳液聚合稳定性的研究[J].石油化工,1994,23(8):514-518. |
| [5] | Ray B,Mandal B M.Dispersion Polymerization of Acrylamide[J].Langmuir,1997,13:2191-2196. |
| [6] | Song B K,Cho M S,Yoon K J,et al.Dispersion Polymerization of Acrylamide with Quaternary Ammonium Cationic Comonomer in Aqueous Solution[J].J Appl Polym Sci,2003,87 (7):1101-1108. |
| [7] | Ye Q,Zhang Z C,Ge X W.Formation of Monodisperse Poly-acrylamide Particles by Dispersion Polymerization:Particle Size and Size Distribution[J].Polym Int,2003,52:707-712. |
| [8] | Yang Z,Shang Y B.Flocculation Properties of Biodegradable Amphoteric Chitosan-based Flocculants[J].Chem Eng J,2011,172:287-295. |
| [9] | Gui Z L,Qian J W.Synthesis,Characterization and Flocculation Performance of Zwitterionic Copolymer of Acrylamide and 4-Vinylpyridine Propylsulfobetaine[J].Eur Polym J,2009,45 (5):1403-1411. |
| [10] | McCormick C L,Salazar L C.Water Soluble Copolymers:44.Ampholytic Terpolymers of Acrylamide with Sodium 2-Acrylamido-2-methylpropanesulphonate and 2-Acrylamido-2-methylpr Opanetrimethyl-ammonium Chloride[J].Polymer,1992,33 (20):4384-4387. |
| [11] | Lowe A B,McCormick C L.Synthesis and Solution Properties of Zwitterionic Polymers[J].Chem Rev,2002,102 (11):4177-4189. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%