生物质化学工程2017，Vol.51Issue(3)：1-6,6.DOI:10.3969/j.issn.1673-5854.2017.03.001
含硫改性壳聚糖气凝胶的合成及对Cu2+吸附的研究
Synthesis of Sulfur-modified Chitosan Aerogel and Its Adsorption Properties for Cu2+
摘要
Abstract
Chitosan was reacted with dimethyl 3,3′-dithiodipropionate to obtain chitosan derivative through acetylation modification.With chitosan/chitosan derivative as raw materials,potassium persulfate(KPS) as initiator and N,N′-methylene diacrylamide(NMBA) as crosslinking agent,the chitosan aerogel and chitosan derivative aerogel were synthesized.The structure and properties of chitosan and its derivative were characterized and analyzed by FT-IR,XRD and TG.Meanwhile,chitosan aerogel and chitosan derivative aerogel were characterized by SEM.In addition,the static adsorption of Cu2+ ions on chitosan aerogel and chitosan derivative aerogel were also investigated.The FT-IR showed that the chitosan derivative was successfully synthesized.The XRD and TG analysis showed that the crystallinity and thermal stability of chitosan derivative decreased compared with those of chitosan.The SEM showed that the number of pores in the chitosan derivative aerogel increased.The results of adsorption experiment indicated that the chitosan derivative aerogel showed noticeable improvements in the adsorption capacity of Cu2+ ions.And under the conditions of 25℃,chitosan derivative aerogel 50mg,initial mass concentration of Cu2+ 100mg/L and pH value 5,the adsorption reached equilibrium at 60min with the maximum adsorption capacity of 48.26mg/g,which increased by 63.37% than that of unmodified chitosan aerogel.关键词
壳聚糖/气凝胶/重金属离子/吸附Key words
chitosan/aerogel/heavy metal ions/adsorption分类
化学化工引用本文复制引用
朱雪换,杨仁党,刘萧..含硫改性壳聚糖气凝胶的合成及对Cu2+吸附的研究[J].生物质化学工程,2017,51(3):1-6,6.基金项目
制浆造纸工程国家重点实验室自主研究课题(2015ZD04) （2015ZD04）
