NEW OPTICALLY ACTIVE ORGANO-SOLUBLE POLY(AMIDE-IMIDE)S FROM [N,N'-(4,4'-DIPHTALOYL)-BIS-L-AMINO DIACID]S AND 1,2-BIS[4,4'-AMINOPHENOXY] ETHANE: SYNTHESIS AND CHARACTERIZATION
作者:AKRAM FEYZI、KHALIL FAGHIHI、AHAMD RAEISI、MARYAM KOUSHKI、MANSOURE FARAHANI
DOI:10.4067/s0717-97072013000300020
日期:——
Then six new optically active poly(amide-imide)s (PAI)s with good inherent viscosities were synthesized by direct polycondensation reaction of [N,N΄-(4,4΄-diphtaloyl)-bis-L-amino diacid]s with 1,2-bis[4,4’-aminophenoxy] ethane (APE) 4 in a medium of N-methyl-2-pyrrolidone (NMP)/ triphenyl phosphite (TPP)/ calcium chloride (CaCl 2 )/pyridine. Not only PAIs are optically active but also soluble in various
摘要在冰醋酸/吡啶(Py)溶液中,3,3΄,4,4΄-联苯四甲酸二酐(BPDA)1与L-氨基酸2a-f反应合成了六种新的二元羧酸3a-f。在回流温度下。然后通过[N,N΄-(4,4΄-二邻苯二甲酰基)-双-L-氨基二酸]的直接缩聚反应合成了六种新的具有良好固有粘度的旋光性聚酰胺酰胺(PAI)。在N-甲基-2-吡咯烷酮(NMP)/亚磷酸三苯酯(TPP)/氯化钙(CaCl 2)/吡啶的介质中与1,2-双[4,4'-氨基苯氧基]乙烷(APE)4混合。PAI不仅具有光学活性,而且可溶于各种有机溶剂。这些所得的新聚合物可用于柱色谱法中以分离对映体混合物。所得聚合物通过FTIR,1 H-NMR光谱进行了充分表征,元素分析,比浓对数粘度,比旋光度,溶解度测试和UV-Vis光谱。还使用热重分析(TGA)研究了PAI 3a-f的热性能。热性能; 有机可溶性聚合物;固有粘度。