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通过Mannich反应,由水杨酸、甲醛和甲胺合成了一种在主链上含有水杨酸基和叔胺基的新型聚电解质SFMA。用SFMA作为聚合物催化剂催化P-硝基苯酚乙酸酯(PNPA)的水解反应。动力学研究结果表明,在较高的pH值下,SFMA比水杨酸及其与甲醛的缩聚物具有较高的加速作用。缩聚物主链上的胺基能与水杨酸基的羟基发生协同作用。对缩聚物的组成及其在水溶液中的构象对催化活性的影响也进行了研究。
By Mannich reaction, a novel polyelectrolyte SFMA containing salicylic acid and tertiary amine in the main chain was synthesized from salicylic acid, formaldehyde and methylamine. Catalytic hydrolysis of p-nitrophenol acetate (PNPA) with SFMA as a polymer catalyst. Kinetic studies have shown that SFMA has a higher accelerating effect than salicylic acid and its condensation with formaldehyde at higher pH. Amino groups on the main chain of the polycondensation react synergistically with salicylic acid-based hydroxyl groups. The effect of the composition of the polycondensate and its conformation on the catalytic activity in aqueous solution was also investigated.