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%.
Abstract
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%.
关键词
蒙脱土 /
插层 /
杂化聚合物 /
分散聚合 /
絮凝剂
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Key words
montmorillonite /
intercalation /
hybrid polymer /
dispersing polymerization /
flocculation
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参考文献
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