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Novel Semi‐Fluorinated Poly(ether imide)s Derived From 4‐( p ‐Aminophenoxy)‐3‐trifluoromethyl‐4′‐aminobiphenyl
Author(s) -
Kute Vijay,
Banerjee Susanta
Publication year - 2003
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200350070
Subject(s) - imide , polymer chemistry , trifluoromethyl , ether , monomer , polyimide , tetrahydrofuran , chemistry , polymer , materials science , organic chemistry , solvent , alkyl , layer (electronics)
An unsymmetrical diamine monomer 4‐( p ‐aminophenoxy)‐3‐trifluoromethyl‐4′‐aminobiphenyl has been synthesized successfully. This monomer leads to the synthesis of different novel poly(ether imide)s when reacted with different dianhydrides like pyromellatic dianhydride (PMDA), benzophenone tetracarboxylic acid dianhydride (BTDA), 2,2‐bis(3,4‐dicarboxyphenyl) hexafluoropropane (6FDA), and oxy diphthalic anhydride (ODA). The poly(ether imide) prepared from this monomer on reaction with 6FDA is soluble in several organic solvents such as N ‐methylpyrolidinone (NMP), dimethylformamide (DMF), N , N ‐dimethylacetamide (DMAc), tetrahydrofuran (THF), and CHCl 3 . The poly(ether imide)s prepared from BTDA and ODA are soluble in NMP, DMF, and DMAc but not in THF or CHCl 3 , whereas the polymer prepared from PMDA is soluble only in NMP. The water uptake value for these poly(ether imide) films is very low (0.2–0.5%), and exhibited low dielectric constants (2.81 at 1 MHz). The polymers exhibited high thermal stability up to 532 °C in air for 5% weight loss, and high glass transition temperatures up to 288 °C. The polymer exhibited high tensile strength up to 135 MPa, modulus 3.2 GPa, and elongation at break up to 25%, depending on the exact polymer structure.The structure of the poly(ether imide) synthesised from 4‐( p ‐aminophenoxy)‐3‐trifluoromethyl‐4′‐aminobiphenyl and 2,2‐bis(3,4‐dicarboxyphenyl) hexafluoropropane. This polymer was soluble in many organic solvents.