聚十二烷二元酸酯及其共聚酯的合成

Study on the Synthesis of Polydodecanedioate and its Copolyesters

摘要: 通过直接熔融缩聚法合成了一系列聚十二烷二元酸酯，用GPC、^1H—NMR、FTIR对产物进行了表征，并讨论了预聚酯合成时催化剂浓度和种类、预聚反应温度、预聚初始醇酸摩尔比对聚合反应的影响。结果表明，在所选的三个催化剂体系中，氮化亚锡二水合物与对甲苯磺酸复合催化剂的催化效果最好；最佳反应条件：n对甲苯横酯／n二元酸=0．0021～0．0032，反应温度为160～180℃，醇酸摩尔比范围为1．05—1.10。

Abstract: A series of polydodecanedioates were synthesized by direct melt polycondensation. The polyesters were characterized by GPC, 'H-NMR and FTIR, and the pre-polycondensation conditions, including the varieties of catalyst and its content, the reaction tempera