Authors Ghosh, A. ; Chatterjee, S. ; Banerjee, S. ; Komber, H. ; Voit, B.
Title Linear and hyperbranched poly(arylene ether)s from a new semifluorinated AB monomer
Date 07.06.2011
Number 26346
Abstract A new trifluoromethyl-activated AB monomer has been successfully synthesized by Pd-initiated coupling of 4-bromo anisole with 4-fluoro-3-trifluoromethylphenylboronic acid followed by demethylation. The monomer leads to a semifluorinated poly(arylene ether) by nucleophilic displacement polymerization reaction. The AB monomer has been further copolymerized with a corresponding AB2 monomer to form the corresponding semifluorinated hyperbranched (hb) poly(arylene ether). The resulting linear and hb poly(arylene ether)s exhibited weight average molecular weight of 75700 and 144100 g/mol, respectively. The hb copolymer exhibited better solubility in different organic solvents compared to the linear poly(arylene ether). The polymers showed excellent thermal stability up to 522°C at 10% wt loss in air and glass transition temperatures as high as 187°C. The mechanical properties of the linear poly(arylene ether) film 1a exhibited tensile strength at break of 89 MPa, elongation at break of up to 3% and a Young's modulus value of 2.66 GPa. The films of the polymers were hydrophobic in nature and showed water contact angle as high as 93.6°.
Publisher Journal of Macromolecular Science - A: Pure Applied Chemistry
Citation Journal of Macromolecular Science - A: Pure Applied Chemistry 48 (2011) 509-517
Tags ab monomer hyperbranched poly(arylene ether) glass transition temperature thermal stability nitro displacement reaction poly(biphenylene oxide)s trifluoromethyl groups multiblock copolymers polymerization polymers

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