摘要
以聚丙烯腈（ＰＡＮ）和双腈双胺（ＤＣＤ）为原料，合成了有机絮凝剂ＰＡＮ－ＤＣＤ。用ＩＲ、１ＨＮＭＲ和１３ＣＮＭＲ等方法对其结构进行了表征，探讨了ＰＡＮ－ＤＣＤ溶解度随ｐＨ值变化的规律，研究了ＰＡＮ－ＤＣＤ对活性染料的絮凝脱色和去除ＣＯＤＣｒ的性能。结果表明，ＰＡＮ－ＤＣＤ是侧链带有多种极性基团的聚合物；在酸性条件下溶解度较小，碱性条件下溶解度较大；在加入量较少的情况下使活性染料的脱色率接近１００％，并对ＣＯＤＣｒ的去除有较大贡献。
The polymer PAN-DCD was prepared by reaction of polyacrylonitrile with dicyandiamide.Its structure was characterized with the methods of IR,1H NMR and 13C NMR.The rule of the solubility with the change of pH was explored. The efficiency of decolorization for reactive dyes by PAN-DCD and the efficiency of CODCr removal were studied.The results showed that PAN-DCD is such a kind of polymer with many kinds of polar groups in its side chain and low solubility in acid and high solubility in base.The efficiency of decolorization for reactive dyes by small amount of PAN-DCD can approach to 100% and PAN-DCD makes a big contribution to the removal of CODCr.
出处
《城市环境与城市生态》
CAS
CSSCI
CSCD
1999年第3期8-10,共3页
Urban Environment & Urban Ecology
