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以乙二胺为核,与丙烯酸甲酯进行Michael加成反应得到了0.5G树状聚酰胺-胺(0.5代PAMAM),再与过量的乙二胺进行酰胺化反应制得1.0G产品。通过单因素试验筛选出了1.0GPAMAM的最佳反应条件:共沸剂正丁醇的加入量(以乙二胺的质量计)为3%;反应时间为22h;投料摩尔比为n(0.5GPAMAM):n(乙二胺)=1:16;反应温度为25℃。采用红外光谱和核磁共振波谱图对所合成的1.0GPAMAM的结构进行了表征。探讨了端胺基PAMAM处理Cr(Ⅲ)的应用。
Ethylenediamine as the core, and methyl acrylate Michael addition reaction obtained 0.5G dendrimer polyamide - (0.5 generation PAMAM), and then with an excess of ethylenediamine amidation reaction 1.0G products. The optimal reaction conditions of 1.0GPAMAM were screened out by single factor test: the entrainer n-butanol was added in an amount of 3% based on the mass of ethylenediamine; the reaction time was 22h; the feed molar ratio was n (0.5GPAMAM ): n (ethylenediamine) = 1: 16; the reaction temperature is 25 ° C. The structure of the synthesized 1.0GPAMAM was characterized by infrared spectroscopy and nuclear magnetic resonance spectroscopy. The application of amine terminated PAMAM to Cr (Ⅲ) was discussed.