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

Organo-soluble fluorinated polyimides were synthesized by the polycondensation of a new aromatic diamine α,αbis(4-amino-3,5-dimethylphenyl)-4'-fluorophenyl methane with several aromatic dianhydrides. The one-step polymerization polyimides could be soluble not only in polar aprotic solvents, such as N-methyl-2-pyrrolidinone, and N,Ndimethylacetamide, but also in common organic solvents, such as chloroform, cyclopentanone, m-cresol and so on. The polyimide films show excellent transparency with the UV-Vis cut-off lengths of 310-360 nm and light transmittances of higher than 80% in the visible region. In addition, the polyimides exhibit good thermal stability with an initial decomposition temperature (Td) higher than 530℃ and have more than 60% of residual weight retentions at 700 ℃.

作 者： Jin-gang Liu Yang-xi Peng Hong-shen Li Lin Fan Shi-yong Yang   作者單位： Jin-gang Liu,Hong-shen Li,Lin Fan,Shi-yong Yang(Laboratory of Advanced Polymer Materials, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China)

Yang-xi Peng(Department of Chemistry, Hunan Loudi Teacher's College, Loudi 417000, China) 

刊 名： 高分子科學(xué)（英文版）  ISTIC SCI 英文刊名： CHINESE JOURNAL OF POLYMER SCIENCE  年，卷(期)： 2005 23(1)  分類號：   關(guān)鍵詞： Fluorinated polyimides   Solubility   Thermal stability   Optical transparency