Abstract
A simple and reliable non-aqueous direct titration method for the determination of anhydride content in maleic anhydride-vinyl acetate copolymers is described. The procedure involves reaction of the anhydride with a large excess of aniline followed by direct titration of the resulting monoacid with ethanolic NaOH using potentiometric or thymol blue end point detection. The method overcomes many of the disadvantages of previously published methods, and its application to other copolymers is considered.
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