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以甲醇为溶剂、投料比为3.0GPAMAM/N,N-二甲基乙醇胺=1∶16,N,N-二甲基乙醇胺/环氧氯丙烷=1∶1、反应温度50℃、反应时间12h的优化条件下,利用环氧氯丙烷与整代产品进行加成反应,以及环氧氯丙烷与N,N-二甲基乙醇胺进行季铵化反应,对3.0GPAMAM树状大分子进行阳离子改性。并采用红外光谱(FT-IR)、核磁共振(NMR)对产品进行了结构表征。结果表明:所合成的产品与预期产物结构吻合较好,达到预期目标,且阳离子转化率达到90%以上。
Methanol as solvent, the feed ratio was 3.0GPAMAM / N, N-dimethylethanolamine = 1:16, N, N-dimethylethanolamine / epichlorohydrin = 1: 1, the reaction temperature was 50 ℃, the reaction time was 12h Under the optimal conditions, the use of epichlorohydrin and the entire product of the addition reaction, and epichlorohydrin with N, N-dimethylethanolamine quaternary reaction 3.0GPAMAM dendrimer cationic modification . The products were characterized by FT-IR and NMR. The results show that the synthesized product is in good agreement with the expected product structure and achieves the expected goal, and the cation conversion rate reaches more than 90%.