采用可逆加成-断裂链转移(RAFT)聚合技术,通过合成并使用具有双硫酯结构的化合物N-咔唑二硫代甲酸苄基酯(BCBD) RAFT试剂,以N,N-二甲基丙烯酰胺(DMAA)为单体,合成得到了-Mn=9 120,分子量分布窄(PDI＜1.1),且链末端带发色团的聚合物PDMAA.PDMAA溶液在为0.1～2 000 mg/L的浓度范围内,在波长为370 nm处的吸收强度与其浓度具有良好的线性关系.PDMAA作为基准物表征超滤膜的截留性能的研究,结果表明,相对于PEG10000,PDMAA可以准确并且简易地表征超滤膜的截留性能,初步说明PDMAA作为基准物质的可行性,也表明RAFT活性聚合是制备性能优异超滤膜截留性能检测用基准物质的可行途径.
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