反相浓乳液方法制备聚苯乙烯/二乙烯基苯结构型泡孔聚合物

通过反相浓乳液聚合方法制备了系列聚苯乙烯/二乙烯基苯(PS/DVB)泡孔聚合物.水作为分散相,其分散相体积分数可达90%;苯乙烯单体作为连续相,聚合后构成PS/DVB泡孔聚合物的结构骨架.用扫描电镜系统研究了乳化剂的浓度、分散相体积分数、添加不同沸点的溶剂等对泡孔聚合物断面形态的影响,并考察了泡孔聚合物对水和柴油的吸附情况.结果表明,不同工艺条件下可以制备出不同孔径的泡孔聚合物,加入不同沸点溶剂使得泡孔壁也形成了多孔结构.

Preparation of Polystyrene/Divinylbenzene Porous Materials via Reverse Concentrated Emulsion Pathway

A range of polystyrene/divinylbenzene(PS/DVB) porous materials were prepared via reverse concentrated emulsion polymerization pathway. The aqueous phase(H 2O), as the discontinuous phase, constituted 75%-90% by volume fraction in each case. The styrene monomer, as the continuous phase, constituted the framework of PS/DVB porous polymer after the polymerization. The effects of the concentration of Span 80 emulsifier, dispersed phase volume ratio and the addition of solvent with different boiling points on the morphological structure of PS/DVB porous polymer were investigated. The water and toluene absorption of PS/DVB porous polymer was also studied. The results showed that the PS/DVB porous polymers with different diameters were produced under different technical conditions, and the Scanning Electron Micrographs have confirmed the porous structure of PS/DVB polymers.