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Studies on a new water‐soluble sulfur‐containing cellulose derivative

机译：Studies on a new water‐soluble sulfur‐containing cellulose derivative

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AbstractA new sulfur‐containing cellulose derivative, carboxymethyl cellulose (CMC) xanthate (CMCX), has been prepared by the reaction of CMC with CS2in 10–15 NaOH solution for 1 h. Degree of esterification (DE) of the product, determined by UV, may reach 3.3 by mole (or about 1.1 by weight). The product was water soluble. The stability of CMCX has been studied by UV, DSC, and TGA, and it was found that CMCX was more stable in the solid state than in solution. The precipitation of gold ion in dilute solution (10 μg Au · mL−1) by CMCX was very rapid, and the recovery efficiency of gold could reach 96 or higher. The optimum dosage was about 0.1 g CMCX for 10 mL 10 μg Au · mL−1solution. © 1994 John Wil

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