疏水缔合阳离子聚丙烯酰胺的合成与表征( Synthesis and characterization of hydrophobically associating cationic polyacrylamide )

ZL Yang YG Bao CX Li YY Qin B Liu Experimental/ adsorption chemical engineering polymer blends polymerisation thermal analysis transmission electron microscopy wastewater treatment/ hydrophobically associating cationic polyacrylamide dimethyldiallyammonium chloride micellar free radical copolymerization technique nuclear magnetic resonance hydrogen spectroscopy H NMR transmission electron microscopy TEM thermal gravimetric analysis flocculant dosage oil removal efficiency oily wastewater treatment adsorption bridging property/ E3626 Chemical industry E1710 Engineering materials E1525 Industrial processes E0230 Environmental issues

以丙烯酰胺(AM)、二甲基二烯丙基氯化铵(DMDAAC)和丙烯酸丁酯(BA)为原料，采用胶束自由基共聚技术合成了一种疏水缔合阳离子聚丙烯酰胺P（AM-DMDAAC-BA）。用核磁共振氢谱(1HNMR)、透射电镜(TEM)和热重分析(TGA)对共聚物进行了表征。研究了絮凝剂用量对除油效果的影响以及与其它药剂的协同作用。1H NMR结果证实了疏水缔合阳离子共聚物的形成。TEM表明，随着共聚物中疏水基团含量的增加，P（AM-DMDAAC-BA）的吸附桥联性能显著增强。热重分析结果表明，该共聚物具有良好的热稳定性。结果表明，当投加量为50 mg/L时，P（AM-DMDAAC-BA）的除油率可达93.4%。P（AM-DMDAAC-BA）与可溶性淀粉和Al2(SO4)3具有良好的协同效应。在P（AM-DMDAAC-BA）之前加入Al2(SO4)3可以提高除油效率。

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