摘要
采用乳液聚合法制备了球形尿素-壳聚糖分子印迹聚合物。通过正交试验优化了印迹聚合物的制备条件:在乙酸体积分数为2%,戊二醛用量为1 mL,转速为900 r/min,模板分子用量为3 g的条件下制备的印迹聚合物对尿素的吸附量为7.16 mg/g,非印迹聚合物对尿素的吸附量为3.84 mg/g。聚合物的红外图谱研究表明,戊二醛参与了交联反应且模板分子尿素被印迹在聚合物上,聚合物经洗脱后模板分子被基本除去。分子印迹聚合物表面具有均一选择性的吸附位点,最大表观吸附量为9.69 mg/g。
A molecularly imprinted polymer （MIP） material is prepared by emulsification crosslinking method.On the basis of orthogonal design,the best preparation conditions are determined as follows：2％ of acetic acid volume fraction,1 mL of glutaraldehyde,900 r/min of rotation speed and 3 g of template molecule.Under the optimum conditions,the molecular imprinted and non-printed polymers show the maximum adsorption capacity of 7.16 mg/g and 3.84 mg/g for urea,respectively.IR analysis confirms the crosslinking reactions and specific adsorption of the MIP.There are homogeneous selectivity adsorption sites on the surface of MIP and its maximum apparent adsorption capacity is 9.69 mg/g.
出处
《现代化工》
CAS
CSCD
北大核心
2014年第4期78-80,82,共4页
Modern Chemical Industry
关键词
尿素
分子印迹聚合物
正交实验
吸附特性
urea
molecularly imprinted polymer
orthogonal design
adsorption characteristics
