羧甲基纤维素纤维吸附材料结构性能研究

Study on structural properties of carboxymethyl cellulose fiber adsorbent material

近年来,由于工业化的快速发展,水体重金属离子处理已成为一个重要研究课题.因此,研究开发可再生可降解的环保型材料具有实际意义.本文基于羧甲基化方法研制纤维素基吸附材料,制备出一种羧甲基纤维素纤维(CMF)材料,该材料具有较高的羧基含量和理想的纤维形态,并且可通过过滤吸附去除重金属离子,如铜离子.结果表明,该吸附材料不仅能保持良好的纤维形态,并且羧基含量可达到104.28mmol/100g,铜离子的吸附容量最高为64.15mg/g,同时具有良好的再生性能,这使其在作为去除重金属离子的可再生吸附材料中拥有巨大的商业潜力.

In recent years ,the decontamination of heavy metals from water has become an im portant topic in China due to the rapid industrialization. Thus, it is of both fundamental and practical interest to develop ecofriendly, renewable, and degradable materials for this pur pose. In this study,cellulose based adsorbent materials were prepared based on the carboxy methylation modification. A kind of carboxymethylated cellulose fiber （CMF） material with high carboxyl content and desirable fiber morphology was obtained, and its application in heavy metal ions removal,was investigated. The results showed that the CMF based adsor bent material not only maintained the characteristic of fiber morphology, but also had a car boxyl group content of 104. 28 mmol/100 g and a copper ion adsorption capacity of up to 64.15 mg/g. Besides, the CMF material retained an excellent regeneration properties, so it has huge commercial potential in the applacation of heavy metal ions adsorption material.