Synthesis and characterization of optically active and organosoluble poly(amide-imide)s containing imidazole rings as pendent groups by direct polycondensation

作     者：KHALIL Faghihi MEISAM Shabanian 

作者机构：Polymer Research LaboratoryDepartment of ChemistryFaculty of ScienceIslamic Azad University Yang Researchers ClubIslamic Azad University 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2010年第53卷第3期

页      面：580-586页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：the Young Researchers Club Branch of Arak Islamic Azad University for the support of this work 

主　　题：poly(amide-imide)s direct polycondensation optically active polymers imidazole histidine 

摘      要：Six new optically active poly(amide-imide)s(PAIs) 6a-f were prepared by direct polycondensation reaction of N-trimelli-tylimido-L-histidine 4 as a chiral diacid with various aromatic diamines *** phosphite(TPP)/pyridine(Py) in the presence of calcium chloride(CaCl2) and N-methyl-2-pyrrolidone(NMP) were successfully applied to direct polycondensation *** resulting new polymers were in good yields,and had inherent viscosities ranging between 0.29 and 0.41 dL g-1 and were detected with elemental analysis,FTIR,1H-NMR spectroscopy,specific rotation and differential scanning calorimeter(DSC),thermogravimetric analysis(TGA),and derivative of thermaogravimetry(DTG).Imidazole pendent groups of the polymer chains disturb interchain and intrachain interactions and make these PAIs readily soluble in polar aprotic solvents such as N,N-dimethylacetamide(DMAc),N,N-dimethylformamide(DMF),dimethylsulfoxide(DMSO),NMP and solvents such as sulfuric *** analysis indicated that the residual weight percents of polymers at 600 °C were between 56.47% and 68.76%,which show their thermal stability.