Synthesis and characterization of new soluble poly(aryl ether nitrile)s containing phthalazinone moiety

A series of novel poly(aryl ether nitrile)s containing phthalazinone moiety were synthesized by the nucleophilic displacement reaction of bisphenol-like monomers (1) with 2,6-difluorobenzonitrile. The inherent viscosities ranged from 0.46 to 1.07 dL g(-1). The glass transition temperatures were in the range of 277-295 degrees C, and the temperatures for 10% weight loss in nitrogen atmosphere were found between 495 and 527 C. The structures of these resultant polymers were confirmed by FT-IR and H-1 NMR. Moreover, the properties of poly(aryl ether nitrile)s including solubility and crystallinity were also studied. (c) 2007 Xi Gao Jian. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.