Abstract
A series of new fluorinated aromatic poly(ether imide)s (PEIs) were prepared from highly contorted 2,2′-bis(3,4-dicarboxyphenoxy)biphenyl dianhydride and various trifluoromethyl-containing bis(ether amine)s via chemical or thermal imidization. All the PEIs showed good solubility in a variety of organic solvents and could afford flexible, colorless, and transparent thin films via solution-casting. They showed cut-off wavelengths of Uv-vis absorptions below 380 nm and very low yellowness index (b* < 7.0). They also showed high thermal stability with the 10% weight loss temperature from 503 to 585 °C of in nitrogen or air atmosphere. The glass transition temperatures (T gs) are recorded in the range of 194–254 °C by DSC. For a comparative study, another series of non-fluorinated PEIs derived from the same biphenyl-2,2′-diol bis(ether anhydride) with various bis(ether amine)s without the trifluoromethyl substituents were also synthesized and characterized.
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Financial support from the Ministry of Science and Technology, Taiwan ROC is gratefully acknowledged.
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Chen, YC., Hsiao, SH. & Su, YY. Organosoluble and colorless fluorinated poly(ether imide)s derived from a highly contorted biphenyl-2,2′-diol bis(ether anhydride) and aromatic bis(ether amine)s with trifluoromethyl substituents. J Polym Res 24, 87 (2017). https://doi.org/10.1007/s10965-017-1248-x
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DOI: https://doi.org/10.1007/s10965-017-1248-x