Abstract
Abstract The polyampholytes were prepared by treating potassium polymethacrylate with (3-chloro-2-hydroxypropyl)trimethylammonium chloride. The solution viscosity behavior and the potentiometric titration of the polyampholytes were studied. The flocculating ability of the polyampholytes was also investigated by the use of kaolin suspensions. The amine/acid ratio could be varied as desired to some extent by means of changing the reaction temperature. However, the polyampholytes containing more amino groups than about 46% could not be obtained. The resulting polyampholytes showed characteristic viscosity behavior. The results of the flocculation of kaolin suspensions with the polyampholytes showed that the polyampholytes can be expected to become a new type of polymeric flocculants, in which the chain expansion and the charge sign can be varied by changing the pH values of the solutions.
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