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

Journal of The Chilean Chemical Society

RAEISI, AHAMD¹  FAGHIHI, KHALIL¹  KOUSHKI, MARYAM¹  FARAHANI, MANSOURE¹  FEYZI, AKRAM¹ 

[1] Arak University, Arak, Iran

关键词: Poly(amide-;    imide);    Thermal properties;    Organo-;    soluble polymer;    Inherent viscosity.;   

DOI  :  10.4067/S0717-97072013000300020

学科分类：化学（综合）

来源: Sociedad Chilena de Quimica

【 摘 要 】

Six new dicarboxylic acids 3a-fwere synthesized by the reaction of 3,3',4,4'-biphenyltetracarboxylic dianhydride(BPDA) 1 with L-amino acids 2a-f in a solution of glacialacetic acid/pyridine (Py) at refluxing temperature. Then six new optically activepoly(amide-imide)s (PAI)s with good inherent viscosities were synthesizedby direct polycondensation reaction of [N,N'-(4,4'-diphtaloyl)-bis-L-aminodiacid]s with 1,2-bis[4,4'-aminophenoxy] ethane (APE) 4in a medium of N-methyl-2-pyrrolidone (NMP)/ triphenyl phosphite(TPP)/ calcium chloride (CaCl2)/pyridine. Not only PAIs are opticallyactive but also soluble in various organic solvents. These resulting new polymerscan be used in column chromatography for the separation of enantiomeric mixtures.The resulted polymers were fully characterized by means of FTIR, 1H-NMRspectroscopy, elemental analyses, inherent viscosity, specific rotation, solubilitytests and UV-Vis spectroscopy. Also thermal properties of the PAIs 3a-fwere investigated using thermal gravimetric analysis (TGA).

【 授权许可】

Unknown