Abstract: A method for producing charge-modified polyester comprising treating the polyester with at least one agent sufficient to cause hydrolysis of the polyester and a charge-modifier having one or more epoxy groups with a fixed formal charge, resulting in the formation of a bond between the one or more epoxy groups and the polyester. The polyester may be treated with the agent, which is presently preferred to be an alkaline, amine, or combination of both, and charge-modifier, which could have a positive or negative charge.

Abstract: A modified matrix, presently preferred to be a polyester substrate, having been reacted with a modifier, the modifier presently preferred to have one or more epoxy groups which bond to the matrix to change the characteristics of the matrix, thus permitting the matrix to be suitable for use in a variety of applications, such as a dye scavenger capable of absorbing dyes bled into solution.