A series of poly(arylene ether)s was synthesized by the nucleophilic aromatic substitution (NAS) polycondensation reactions of N,N-dialkyl-2,4-difluorobenzenesulfonamide and N,N-dialkyl-3,5-difluorobenzenesulfonamide. The sulfonamide-activated monomers were synthesized by reacting 2,4- and 3,5-difluorobenzenesulfonyl chloride with a series of dialkyl amines, ranging from n-propyl to n-octyl. The poly(arylene ether)s, prepared with bisphenol-A as the nucleophilic reaction partner, were characterized by 1H and 13C NMR spectroscopy, TGA, DSC and SEC. The thermal properties of the N,N-dialkyl-2,4-difluorobenzenesulfonamide polymers were compared to those of the N,N-dialkyl-3,5-difluorobenzenesulfonamide system. Poly(arylene ether)s prepared from the 2,4-monomers possessed consistently higher glass transition temperatures than those from the 3,5-monomers. While the 5% weight loss temperatures were similar for both systems, there were observable differences in the TGA traces, indicating that the decomposition pathways may not be the same

Comparison of the thermal properties of poly(arylene ether)s prepared from of N, N-dialkyl-2,4-difluorobenzenesulfonamide and N,N-dialkyl-3,5-difluorobenzenesulfonamide

251st National Meeting (2016)

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