| 摘要 |
Methods for the solution polymerization of diallylicdialkylammonium salts, initiated by species capable of generating free radicals, including the steps of providing a reaction mixture of a diallylicdialkylammonium salt and a chain-extending monomer in aqueous solution at concentrations effective to polymerize to form a polydiallylicdialkylammonium salt having a predetermined molecular weight; adding a free radical initiator to the reaction mixture; heating the reaction mixture with continuous stirring to a temperature greater than about 70 DEG C, so that the diallylicdialkylammonium salt and the chain-extending monomer polymerize to form a polydiallylicdialkylammonium salt; and recovering the polydiallylicdialkylammonium salt in aqueous solution; wherein the alkyl groups of the diallylicdialkylammonium salt and the polydiallylicdialkylammonium salt contain a total of from two to eight carbons atoms. Aqueous solutions of polydiallylicdialkylammonium salts prepared by the polymerization method, and methods for the separation of suspended particles from an aqueous medium with aqueous solutions of the polydiallylicdialkylammonium salts are also disclosed. |
