Abstract
Abstract Tercopolymers have been prepared by condensing a mixture of salicylic acid, thiourea, and any one of such comonomers as o-cresol, p-cresol, o-chlorophenol, and p-chlorophenol with trioxane in the presence of 2 M HCl as catalyst. The tercopolymers were characterized by elemental analyses. Their M[Mbar]n was determined by nonaqueous conductometric titration both against standard sodium methoxide and tetra-n-butyl ammonium hydroxide and also by the VPO method. Also made were an IR spectral study, a viscometric study in dimethylformamide (DMF), and a thermal study based on TGA. Chelation ion-exchanging properties of selected tercopolymer samples were also studied by employing the batch equilibration method.
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