三维有序交联聚苯乙烯大孔材料的制备及其功能化  

Preparation and Functionalization of Three-dimensionally Ordered Macroporous Cross-linked Polystyrene

作　　者：杨惠芳[1,2] 张旭[1] 闫卫东[1] 

机构地区：[1]河北工业大学高分子科学与工程研究所,天津300130 [2]石家庄铁道学院材料学院,石家庄050043

出　　处：《材料导报》2009年第10期79-82,共4页Materials Reports

基　　金：国家自然科学基金(50273009);河北省自然科学基金(E2007000052);河北省教育厅科研计划项目(20073707);教育部功能高分子材料重点实验室开放基金(2006-007)

摘　　要：利用二氧化硅模板法,采用苯乙烯-二乙烯基苯自由基共聚方法制备了孔径在200～1020nm的三维有序交联聚苯乙烯大孔材料,并在此基础上通过氯甲基化反应对所制备的有序孔材料进行孔壁功能化。对所制备的三位有序交联聚苯乙烯孔材料及氯甲基化后的形貌进行了扫描电子显微镜表征。结果表明,所制备的有序孔材料孔径均一、结构有序,氯甲基化后的孔材料保持了原有孔材料的有序结构。红外光谱分析表明氯甲基基团已被成功地引入了有序孔材料,并且主要发生在苯环的对位。通过热重-滴定分析方法确定了引入到有序孔材料的氯相对含量为5.52mmol/g。The three-dimensionally ordered macroporous cross-linked polystyrene（3DOM CLPS） with pore size in the range of 200-1020nm is prepared by the method of template-directed synthesis. Furthermore, the chloromethylation is carried out to functionalize the 3DOM CLPS. The SEM results show that the 3DOM CLPS is arranged in highly ordered fashion and the ordered structure is well preserved after chloromethylation. The FT-IR spectrum of the chloromethylated 3DOM CLPS indicates that chloromethyl groups are successfully immobilized onto the pore wall of 3DOM CLPS and the chloromethyl groups are predominantly at the para position of benzene-ring. The relative content of chlorine in the porous material is 5.52mmol/g, determined by the thermogravimetry-titration approach.

关 键 词：三维有序大孔材料 交联聚苯乙烯 功能化 氯甲基化反应 

分 类 号：O631[理学—高分子化学]