β-环糊精聚合物微球对Pb^(2+)的吸附性能研究  

Study on adsorption behavior of β-cyclodextrin polymer microspheres to Pb^(2+)

作　　者：李仲谨[1] 韩春鹏[1] 杨威[1] 丁金皓[1] 苗宗成[1] 赵燕[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安710021

出　　处：《食品科技》2010年第10期244-247,共4页Food Science and Technology

基　　金：国家自然科学基金项目(50573046)

摘　　要：研究了反相乳液法合成的β-环糊精聚合物(β-CDP)微球对Pb2+的吸附,考察了吸附时间、温度、溶液浓度对吸附量的影响及对Pb2+的吸附动力学特性,并利用红外(FT-IR)、X射线衍射仪(XRD)、热重(TGA)对微球进行表征。结果表明:吸附12h达到平衡;在一定的温度范围内,吸附量随吸附温度的升高先增大后减小,60℃附近吸附量最大,饱和吸附量为103.1mg/g;β-CDP微球对Pb2+的吸附行为很好地符合Freundlich方程,其相关系数为0.9989。The β-cyclodextrin polymer （β-CDP） microspheres have been syntheisized inverse emulsion pol-ymerization and the adsorption of β-CDP microspheres to Pb^2＋ have been studied, the adsorption characteristic have been inspected such as adsorption time, the temperature, solution concentration and the adsorption dynamics to Pb^2＋. And the FT-IR, XRD, TGA were used to carry out superficial characteristics. So it can been seen from the result, that is the 12 h adsorbtion equilibrations, and adsorption amounts with the adsorption temperature power-up was enhanced and then diminished, the max adsorptions amounts occurred at 60 ℃, saturated adsorption amounts are 103.1 mg/g. The adsorption behavior of β-CDP microspheres to Pb^2＋ accords with Freundlich equation, and the correlation is 0.9989.

关 键 词：β-环糊精聚合物微球 吸附 PB^2+ 动力学 

分 类 号：O636.12[理学—高分子化学]