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SYNTHESIS AND CHARACTERIZATION OF ORGANO-SOLUBLE FLUORINATED POLYIMIDES FROM 4,4'-BIS(3-AMINO-5-TRIFLUOROMETHYLPHENOXY)-BIPHENYL AND VARIOUS AROMATIC DIANHYDRIDES

引用

Chinese Journal of Polymer Science 2005年第1期23卷 55-61页

作者： Gui-longWu Jin-gangLiu Zuo-bangLi Zi-yiGe LinFan Shi-yongYang laboratoryofadvancedpolymermaterials CenterforMolecularScienceInstituteofChemistryChineseAcademyofSciencesBeijing100080China InstituteofPolymerScienceandTechnology HebeiUniversityofTechnologyTianjin300130China

An aromatic diamine monomer,4,4'-bis(3-amino-5-trifluoromethyl phenoxy)-biphenyl (TFBPDA),wassynthesized via the nucleophilic displacement reaction of 3,5-dinitrobenzotrifluoride and 4,4'-*** monomer wasreacted with various aromatic dianhydrides via the high temperature polycondensation procedure to provide a series *** 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 ***-4,derived from 4,4'-(hexafluoroisopropylidene)diphthalic anhydride and TFBPDA,was even soluble ***,PI films exhibit good thermal stability,outstanding transparency in the visible light region and acceptablemechanical and electrical *** excellent combined properties of the polyimides make them as a good candidate forfabricating microelectronics.

关键词： Diamine Polyimide Trifluoromethyl Nucleophilic displacement Solubility.

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ORGANO-SOLUBLE FLUORINATED POLYIMIDES DERIVED FROM α,α-BIS(4-AMINO-3,5-DIMETHYLPHENYL)-4'-FLUOROPHENYL METHANE AND VARIOUS AROMATIC DIANHYDRIDES

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Chinese Journal of Polymer Science 2005年第1期23卷 47-53页

作者： Jin-gangLiu Yang-xiPeng Hong-shenLi LinFan Shi-yongYang laboratoryofadvancedpolymermaterials CenterforMolecularScienceInstituteofChemistryChineseAcademyofSciencesBeijing100080China DepartmentofChemistry HunanLoudiTeacher＇sCollegeLoudi417000China

Organo-soluble fluorinated polyimides were synthesized by the polycondensation of a new aromatic diamine α,α-bis(4-amino-3,5-dimethylphenyl)-4'-fluorophenyl methane with several aromatic *** one-step polymerizationprocedure was conducted at 180℃ in m-cresol,producing the polyimides with inherent viscosities of 0.68-0.76 dL.g^(-1).Thepolyimides could be soluble not only in polar aprotic solvents,such as N-methyl-2-pyrrolidinone,and N,N-dimethylacetamide,but also in common organic solvents,such as chloroform,cyclopentanone,m-cresol and so *** films show excellent transparency with the UV-Vis cut-off lengths of 310-360 nm and light transmittances ofhigher than 80% in the visible *** addition,the polyimides exhibit good thermal stability with an initial decompositiontemperature(T_d)higher than 530℃ and have more than 60% of residual weight retentions at 700℃.

关键词： Fluorinated polyimides Solubility Thermal stability Optical transparency.

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