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使用二茂钴/α-溴代异丁酸乙酯(EBiB)催化体系,利用原子转移自由基聚合方法制备了孔径为350nm的三维有序聚苯乙烯大孔材料(3DOMPS).利用傅里叶变换红外光谱(FT-IR)、核磁共振(NMR)、扫描电子显微镜(SEM)以及高效凝胶渗透色谱(GPC)对所制备的产物进行了表征分析.利用FT-IR和NMR对3DOMPS的微观结构进行了分析.SEM分析表明,无论是二氧化硅模板还是所得到的3DOMPS都显示了其三维有序的结构,并且大孔材料的收缩率是24%.GPC分析表明,3DOMPS的分子质量略高于自由空间得到的聚苯乙烯,这一结果表明在受限空间内活性聚合与非活性聚合存在着差异.
A three-dimensional ordered polystyrene macroporous material (3DOMPS) with a pore size of 350 nm was prepared by atom transfer radical polymerization using the cobaltocene / ethyl α-bromoisobutyrate (EBiB) (FT-IR), nuclear magnetic resonance (NMR), scanning electron microscopy (SEM) and high performance gel permeation chromatography (GPC) were used to characterize the prepared product.The microstructure of 3DOMPS was characterized by FT-IR and NMR Structure was analyzed.SEM analysis showed that both the silica template and the resulting 3DOMPS showed its three-dimensional ordered structure, and macroporous material shrinkage was 24% .GPC analysis showed that the molecular mass of 3DOMPS slightly Higher than the free space obtained polystyrene, the results show that there is a difference between living polymerization and non-living polymerization in a confined space.