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Studies on a new water‐soluble sulfur‐containing cellulose derivative
Author(s) -
Zeng Huiyang,
Li Wei,
Li Zhuomei
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070541301
Subject(s) - cellulose , xanthate , chemistry , sulfur , carboxymethyl cellulose , precipitation , derivative (finance) , nuclear chemistry , polymer chemistry , organic chemistry , sodium , physics , meteorology , financial economics , economics
A new sulfur‐containing cellulose derivative, carboxymethyl cellulose (CMC) xanthate (CMCX), has been prepared by the reaction of CMC with CS 2 in 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 −1 solution. © 1994 John Wiley & Sons, Inc.