坡缕石/多羟基树状高分子复合材料的制备及性能  

Preparation of Palygorskite / Polyhydroxy Dendrimer Polymer Composite Material and Its Adsorptive Properties

作　　者：杨丹丹[1] 郭英浩[1] 孟晓雷[1] 牛蕊[1] 常玥[1,2,3] 查飞[1] 

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070 [2]生态环境相关高分子材料教育部重点实验室,甘肃兰州730070 [3]甘肃省高分子材料重点实验室,甘肃兰州730070

出　　处：《精细化工》2015年第3期312-317,共6页Fine Chemicals

基　　金：国家自然科学基金项目(21161017);2010西北师范大学知识与科技创新工程项目(nwnu-kjcxgc-03-63)~~

摘　　要：以Na BH4还原水杨醛席夫碱修饰坡缕石为核,采用发散法通过与三聚氯氰、4-氨甲基哌啶、水杨醛、Na BH4还原的重复反应制备了1.0~2.0 G多羟基树状高分子/坡缕石复合材料,利用红外光谱、元素分析、热重对复合材料结构进行了表征,扫描电子显微镜测定了复合材料的外部形貌。吸附实验表明：该复合材料对废水中有机酚、重金属离子的吸附能力优于坡缕石原土,10 mg第二代树状高分子/坡缕石在293 K,对初始质量浓度是50mg/L的对硝基苯酚、对苯二酚、Pb（Ⅱ）的吸附量分别是35.3、34.02、44.8 mg/g,吸附动力学拟合结果符合拟二级动力学方程。Palygorskite / polyhydroxy dendrimer polymer composite material was prepared by divergent method using cyanuric chloride,4-（ aminomethyl） piperidine, salicylaldehyde and reduced salicylaldehyde Schiff base modified palygorskite with Na BH4 as raw materials. The structures of the composite materials were characterized by means of FTIR,TG and elemental analysis. The morphology of the materials was measured by SEM. The adsorption capacity of the composite material for organic phenol or heavy metal ions was superior to that of palygorskite in aqueous solution. The results indicate that the maximum adsorption capacity of the second generation dendrimers polymer / palygorskite（ PGS-G2） for p-nitrophenol,hydroquinone and Pb（ Ⅱ） was 35. 3,34. 02 and 44. 8 mg /g at 293 K and the amount of the adsorbent was 10 mg when the initial concentration was 50 mg / L. The adsorption kinetics data indicate that the adsorption fitted well with the pseudo-second-order kinetic model.

关 键 词：坡缕石 多羟基树状高分子 复合材料 吸附 水处理技术与环境保护 

分 类 号：TQ085.412[化学工程]