Synthesis of quaternary ammonium salt of hyperbranched polyester and its application in dyeing wastewater treatment
A novel unique macromolecule, quaternary ammonium salt of hyperbranched polyester (H20-EPTAC) was prepared by the reaction of hyperbranched polyester Boltorn H20 with 2, 3-epoxypropyltrimethylammonium chloride (EPTAC) using sodium hydroxide as an alkaline catalyst in DMF. A series of products were obtained by varying the molar ratio of H20 to EPTAC. The flocculation properties of H20-EPTAC for dyeing wastewater were studied. The influences of the dosage of H20-EPTAC, pH and initial concentration of dye on the efficiency of dye removal were discussed. The dye removal efficiency of Acid Rubine APP, Direct Blue 4GL and Acid Black BR reached 93%, 90% and 97%, respectively. The optimum dosage was different for different types of dyes. The dye removal efficiency increased with increasing molar ratio of EPTAC. These results indicated that H20-EPTAC had a good potential for treating dyeing wastewater. The flocculation mechanism may be due to the theory of charge neutralization and molecular trestle bridge.
DU Yingying XING Yanjun DAI Jinjin
College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620 College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
887-889
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）