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以端基为8个伯氨基的树枝状化合物〔PAE(NH2)8〕和聚氧乙烯〔PEO-A(454)〕或丙烯酸钠(SAA)与聚氧乙烯为原料合成了含聚氧乙烯链端树枝状聚(胺-酯)(PAE-PEO-A和PAE-SAA-PEO-A)。通过正交实验讨论了反应温度、反应时间及原料配比对产物产率的影响,并用FTIR、1HNMR、13CNMR及GPC对试样进行结构表征。测定了含聚氧乙烯链端树枝状聚(胺-酯)的表面张力及对苯甲酸、水杨酸的增溶性。实验结果表明,当反应温度为65℃,反应时间为96 h,原料的配比量n〔PAE(NH2)8〕∶n[(PEO-A(454)]=1∶16,以甲醇为溶剂,产物产率为88.30%。PAE-PEO-A溶液的临界胶束质量浓度为0.007 5 g/L,最小表面张力为43.8 mN/m。PAE-PEO-A对苯甲酸、水杨酸都有增溶性,且增溶能力随着它们的表面官能团数的增多和浓度的增加而增大。当反应温度为50℃,反应时间为96 h,原料的配比量n〔PAE(NH2)8〕∶n(SAA)∶n〔PEO-A(454)〕=1∶12∶8,以甲醇为溶剂,产物产率为48.83%。PAE-SAA-PEO-A水溶性极好,其表面张力与水接近,几乎不具有表面活性。PAE-SAA-PEO-A对苯甲酸和水杨酸有良好的增溶性,尤其是对水杨酸的增溶性明显。在相同质量浓度0.500 g/L时,PAE-SAAPEO-A对水杨酸的增溶量约为PEG-400的2.4倍。
A polyoxyethylene chain containing polyoxyethylene chain was synthesized from dendrimer [PAE (NH2) 8] and polyoxyethylene [PEO-A (454)] or sodium acrylate (SAA) Dendritic poly (amine-ester) (PAE-PEO-A and PAE-SAA-PEO-A). The effects of reaction temperature, reaction time and ratio of raw materials on the yield were discussed by orthogonal experiments. The structure of the samples was characterized by FTIR, 1HNMR, 13CNMR and GPC. The surface tension of poly (ethylene oxide) - terminated dendritic poly (amine - ester) and the solubilization of benzoic acid and salicylic acid were measured. The experimental results showed that when the reaction temperature was 65 ℃ and the reaction time was 96 h, the molar ratio of n PAE (NH2) 8: n (PEO-A (454) , The yield of the product was 88.30% .The critical micelle mass concentration of the PAE-PEO-A solution was 0.007 5 g / L and the minimum surface tension was 43.8 mN / m.PAE-PEO-A had both benzoic acid and salicylic acid Solubilization, and the solubilizing ability increases with the increase of their surface functional groups and concentration.When the reaction temperature is 50 ℃, the reaction time is 96 h, the ratio of raw materials n [PAE (NH2) 8] (SAA): n [PEO-A (454)] = 1:12:8, the yield of product was 48.83% in methanol.PAE-SAA-PEO-A had excellent water- Water has almost no surface activity.PAE-SAA-PEO-A has good solubilization to benzoic acid and salicylic acid, especially to salicylic acid.When the same concentration of 0.500 g / L, PAE-SAAPEO-A salicylic acid solubilization of about 2.4 times PEG-400.