环糊精包结作用下水溶液共聚合制备疏水改性阳离子聚丙烯酰胺及其絮凝效果研究

Synthesis of P(AM-DAC-POEA) via Me-β-CD to Complex the Hydrophobic Monomer in Aqueous Solution and its Flocculation

在水溶液中制备了甲基环糊精(Me-β-CD)/疏水单体2-苯氧乙基丙烯酸酯(POEA)的包结物(1a)。利用紫外-可见光谱及核磁共振波谱等检测手段研究了Me-β-CD与POEA的包合作用,并对包合物的结构、性能进行了表征和分析。同时在水溶液中引发丙烯酰胺(AM)、阳离子单体丙烯酰氧乙基三甲基氯化铵(DAC)以及1a的均相共聚合得到疏水修饰的阳离子聚丙烯酰胺P(AM-DAC-POEA),实现了用绿色方法合成高效高分子絮凝剂的目的,并对该高分子对高岭土模拟污水的絮凝效果进行了考察。

The inclusion complex of 2-phenoxylethyl acrylate （POEA） with methylated-β-cyclodextrin （Me-β-CD） was synthesized in water and characterized by UV-vis and 1H NMR spectra. A series of hydrophobically modified cationic polyacrylamide P（AM-DAC-POEA） were synthesized by the copolymerization of AM, DAC and la. The flocculation and absorptive experiments of P （AM-DAG-POEA） in sullage of kaolin demonstrated that the flocculation and absorptive properties can be increased effectively by the hydrophobic interaction. The results indicate that the copolymerization of Me- β-CD encapsulated hydrophobic monomer and hydrophilic monomer in a homogeneously system provides a green method to obtain amphiphilic and functional polymers.