Synthesis of amorphous block copoly(arylene ether ketones) and their characterization |
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| Authors: | V V Shaposhnikova D S Sharapov I A Kaibova V V Gorlov S N Salazkin L V Dubrovina T P Bragina V V Kazantseva K A Bychko A A Askadskii A S Tkachenko G G Nikiforova P V Petrovskii A S Peregudov |
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| Institution: | (1) Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991, Russia |
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| Abstract: | Exchange reactions that may proceed in the course of polycondensation during formation of a polymer from 4,4′-difluorobenzophenone and 4,4′-(isopropylidene)diphenol have been studied. It has been shown that the molecular mass of the polymer decreases under the action of 4,4′-(isopropylidene)diphenol diphenolate. The nucleophilic substitution of the activated aryl halide in DMAA in the presence of potassium carbonate yields high-molecular-mass block copoly(arylene ether ketones) based on 4,4′-difluorobenzophenone and a number of bisphenols. It was demonstrated the synthetic procedure and the chemical structure of block copoly(arylene ether ketones) strongly affect the onset temperature of softening and the mechanical characteristics of the films based on these polymers. |
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