三维有序大孔杂化SiO2的制备、表征及应用

发布时间：2018-08-17 13:11

【摘要】：将有机-无机杂化功能材料与有序大孔材料独特的有序开孔结构相结合,在制备的三维有序大孔二氧化硅(3DOM Si O2)孔壁上可控接枝带有功能基团的聚合物链段,制备3DOM杂化材料。采用表面引发原子转移自由基(SI-ATRP)接枝技术在3DOM Si O2孔壁上可控接枝聚甲基丙烯酸缩水甘油酯(PGMA)链段,讨论了接枝条件对接枝量及接枝链段分子量的影响,并利用FTIR、SEM、TGA、GPC等对接枝过程进行了表征。PGMA接枝链段上环氧基团可进一步与亲核试剂(二乙醇胺,浓硫酸和二乙烯三胺)发生开环反应,得到一系列带有不同官能团的具有较高接枝密度的功能杂化多孔材料,同时,利用该种材料对水中的水杨酸进行了吸附实验,吸附结果表明经二乙烯三胺开环后得到的功能化多孔材料对水杨酸具有很高的吸附量。
[Abstract]:3DOM hybrid materials were prepared by combining organic-inorganic hybrid functional materials with ordered macroporous materials with unique ordered open pore structure. 3DOM hybrid materials were prepared by controllable grafting of polymer chains with functional groups on the three dimensional ordered macroporous silica (3DOM Sio 2) pore walls. The surface initiated atom transfer radical (SI-ATRP) grafting technique was used to control the grafting of poly (glycidyl methacrylate) (PGMA) on the 3DOM Sio 2 pore wall. The effects of grafting conditions and molecular weight of the graft chain were discussed. Furthermore, the grafting process of FTIR SEMN TGAN GPC was used to characterize the ring opening reaction between epoxy group and nucleophilic reagents (diethanolamine, concentrated sulfuric acid and diethylenetriamine) on the graft chain of .PGMA. A series of functional hybrid porous materials with high graft density with different functional groups were obtained. At the same time, the adsorption experiments of salicylic acid in water were carried out by using this kind of material. The adsorption results show that the functionalized porous materials obtained by ring opening of diethylenetriamine have a high adsorption capacity for salicylic acid.
【作者单位】：河北工业大学化工学院;核工业理化工程研究院;
【基金】：国家自然科学基金(No.51573038,51403049) 河北省自然科学基金(No.E2016202261,E2017202036) 河北省教育厅重点基金(No.ZD20131031)资助项目
【分类号】：O613.72;O647.3

【相似文献】