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采用发散法,以端基为8个丙烯酸酯双键的树状聚酯胺[PAE(=)8]和对氨基苯甲酸(PABA)为原料,以甲醇为溶剂,无水碳酸钠催化下65℃反应96h,合成端基为羧基的树状聚酯胺[PAE(COOH)8]。用IR、1H-NMR及13C-NMR测定了它的结构。测定了PAE(COOH)8水溶液的表面张力和对苯甲酸、水杨酸、甲基红等难溶客体小分子的增溶性。结果表明:PAE(COOH)8具有良好的水溶性及表面活性;在质量浓度相同时,其对难溶客体小分子的增溶量远高于十二烷基硫酸钠(SDS)。
Using divergent method, dendritic polyester amine [PAE (=) 8] and p-aminobenzoic acid (PABA) with 8 acrylate double bonds as the starting material, methanol as solvent and anhydrous sodium carbonate as catalyst ℃ for 96h to synthesize the dendritic polyester amine [PAE (COOH) 8]. Its structure was determined by IR, 1H-NMR and 13C-NMR. The surface tension of PAE (COOH) 8 aqueous solution and the solubilization of small molecules such as benzoic acid, salicylic acid and methyl red were determined. The results showed that PAE (COOH) 8 has good water solubility and surface activity. When the mass concentration is the same, PAE (COOH) 8 has a much higher solubilization capacity than that of sodium dodecyl sulfate (SDS).