The carboxymethyl cellulose (CMC), guar gum, sodium alginate and chitosan etc. are natural polysaccharides. This paper presents the synthesis and characterization of natural polymer carboxymethyl cellulose (CMC) and synthetic monomer acrylic acid (AA) based graft copolymer (CMC–g–AA) and its applications in removal of Methylene blue dye from industrial effluents. CMC–g–AA has been synthesized using free radical initiator and characterized by FTIR, TGA, and SEM analysis. The AA concentration has been varied from 5.5 x 10^-2 to 35.5 x 10^-2 mol dm^-3 to get maximum grafting of AA monomer onto CMC. The FTIR spectral analysis proves the successful grafting. The synthesized graft copolymer (CMC–g–AA) has been applied in adsorption of a water soluble monovalent cationic dye such as Methylene Blue.

中文翻译：

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阴离子天然接枝共聚物，用于去除有害染料水污染物

羧甲基纤维素（CMC），瓜尔豆胶，海藻酸钠和壳聚糖等是天然多糖。本文介绍了天然聚合物羧甲基纤维素（CMC）和合成单体丙烯酸（AA）基接枝共聚物（CMC–g–AA）的合成，表征及其在工业废水中亚甲基蓝染料的去除中的应用。CMC-g-AA是使用自由基引发剂合成的，并通过FTIR，TGA和SEM分析进行了表征。AA浓度从5.5 x 10 ^-2到35.5 x 10 ^-2 mol dm ^-3变化使AA单体最大程度地接枝到CMC上。FTIR光谱分析证明了成功的接枝。合成的接枝共聚物（CMC–g–AA）已用于吸附水溶性单价阳离子染料，例如亚甲基蓝。