SYNTHESIS AND CHARACTERIZATION OF ORGANO-SOLUBLE FLUORINATED POLYIMIDES FROM 4,4-BIS(3-AMINO-5-TRIFLUOROMETHYLPHENOXY)-B
An aromatic diamine monomer, 4,4'-bis(3-amino-5-trifluoromethyl phenoxy)-biphenyl (TFBPDA), was synthesized via the nucleophilic displacement reaction of 3,5-dinitrobenzotrifluoride and 4,4'-biphenol. The monomer was reacted with various aromatic dianhydrides via the high temperature polycondensation procedure to provide a series of polyimides. The polyimides, PI-1 to PI-4, show good solubility not only in aprotic solvents, such as N-methyl-2-pyrrolidinone and N,N-dimethylacetamide, but also in many common solvents, such as m-cresol, chloroform and cyclopentanone. PI-4, derived from 4,4'-(hexafluoroisopropylidene)diphthalic anhydride and TFBPDA, was even soluble in toluene. Moreover, PI films exhibit good thermal stability, outstanding transparency in the visible light region and acceptable mechanical and electrical properties. The excellent combined properties of the polyimides make them as a good candidate for fabricating microelectronics.
作 者： Gui-long Wu Jin-gang Liu Zuo-bang Li Zi-yi Ge Lin Fan Shi-yong Yang 作者单位： Gui-long Wu,Zuo-bang Li(Institute of Polymer Science and Technology, Hebei University of Technology, Tianjin 300130, China)Jin-gang Liu,Zi-yi Ge,Lin Fan,Shi-yong Yang(Laboratory of Advanced Polymer Materials, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China)
刊 名： 高分子科学（英文版） ISTIC SCI 英文刊名： CHINESE JOURNAL OF POLYMER SCIENCE 年，卷(期)： 2005 23(1) 分类号： 关键词： Diamine Polyimide Trifluoromethyl Nucleophilic displacement Solubility