聚酯酰亚胺聚醚嵌段共聚物的合成与性能研究  

Synthesis and properties of poly(ester-imide-ether) block copolymer

作　　者：姚果[1] 徐进[1] 兰建武[1] 

机构地区：[1]四川大学轻纺学院,四川成都610065

出　　处：《合成纤维工业》2005年第2期24-26,29,共4页China Synthetic Fiber Industry

摘　　要：采用均苯四酸酐与氨基乙酸合成了酰亚胺二元酸单体,此单体与乙二醇、聚乙二醇熔融缩聚合成3 种不同软／硬段比例分别为7／3,6／4,5／5的耐高温聚酯酰亚胺聚醚嵌段共聚物。通过红外光谱与氢谱确定 了酰亚胺二元酸单体的化学结构,DSC测定其熔点为358℃;利用显微熔点仪、乌式粘度计测定了共聚物的 熔点和特性粘数,3种共聚物熔点分别为232,248,260℃,软／硬段比例为7／3的共聚物的特性粘数为1.12 dL／g。将共聚物熔融纺丝,可纺性较好,纤维在120℃较160℃热定型效果好。Three types of refractory poly(ester-imide-ether) block copolymer with soft-and-hard segment ratio of 7/3,6/4 and 5/5 were prepared via melt polycondensation from bisimide dicarboxylic acid prepared from pyromellitic anhydride and glycine, ethylene glycol and poly(ethylene oxide) diol. The structure of bisimide dicarboxylic was characterized by FT-IR and H NMR. The melting point of this monomer was determined as 358℃ by DSC. The melting point of three block copolymers was measured with microscope as 232, 248 and 260℃, respectively. The intrinsic viscosity of the block copolymer with soft-and-hard segment ratio of 7/3 was measured as 1.12 dL/g with a Ubbelohde viscometer. This copolymer exhibited good spinnability during melt spinning, and the resulted fiber had better heat setting effect at 120℃ than at 160℃.

关 键 词：嵌段共聚物 聚酯酰亚胺 性能研究 合成 聚醚 特性粘数 乌式粘度计 氨基乙酸 熔融缩聚 聚乙二醇 化学结构 红外光谱 熔融纺丝 二元酸 单体 耐高温 DSC 熔点仪 可纺性 热定型 20℃ 比例 硬段 测定 酸酐 氢谱 显微 

分 类 号：TQ317[化学工程—高聚物工业]