PCPAM-MMT 杂化絮凝剂的制备和絮凝性能

摘要

A CPAM-MMT hybrid polymer was synthesized through dispersing polymerization with Acrylamide ( AM) , the organic modified montmorillonite ( O-MMT) , 2-methylacryloylxyethyl trimethyl ammonium chloride ( DMC) and its flocculation performance was also studied .The experimental results showed that morphology of the CPAM-MMT hybrid polymer was a multi-branched structure which helps to entrap more suspended colloidal-particles and gives a better bridging capacity , the flocculation ability of the CPAM-MMT hybrid polymer on the kaolin suspensions was better than that of CPAM and its optimum dosage was about 10 mg · L-1 , the CPAM-MMT hybrid polymer possessed the adsorption function on Cr ( VI) ions, which made the decolorization rate on Cr(VI) larger than that of the CPAM, the CPAM on Cr(VI)was 18%.However, the CPAM-MMT(1) hybrid polymer was 28%.%在合成CPAM乳液的基础上，用DMC对Na-MMT进行插层有机化改性制备O-MMT，采用分散聚合法合成CPAM-MMT乳液絮凝剂，并对其形态和性能表征，得出：PCPAM-MMT 杂化絮凝剂在水中的形态显树枝状，MMT有助于提高模拟污水高岭土的絮凝性能，最佳添加量为10 mg· L-1；PCPAM-MMT杂化絮凝剂对Cr6＋具有较强的吸附能力，CPAM 对Cr（VI）的脱色率是18％。而CPAM-MMT（1）的脱色率是28％。