Authors: ChengLin Chung TuanWen Tzu ShengHuei Hsiao
Publish Date: 2006/09/13
Volume: 13, Issue: 6, Pages: 495-506
Abstract
A novel trifluoromethylsubstituted bisether amine monomer 11bis44amino2trifluoromethylphenoxyphenyl1phenyl222trifluoroethane was synthesized that led to a series of novel fluorinated polyimides via chemical imidization route when reacted with various commercially available aromatic tetracarboxylic dianhydrides These polyimides were highly soluble in a variety of organic solvents such as Nmethyl2pyrrolidone and NN dimethylacetamide and most of them could afford transparent lowcolored and tough films These polyimides exhibited glasstransition temperatures T gs of 227–269 °C and showed no significant decomposition below 500 °C under either nitrogen or air atmosphere These polyimides had low dielectric constants of 287–317 at 10 kHz low water uptake of 013–058 and an ultravioletvisible absorption cutoff wavelength at 364–410 nm For a comparative study a series of analogous polyimides based on 11bis44aminophenoxyphenyl1phenyl222trifluoroethane were also prepared and characterized
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