Abstract
In this work, a series of novel organosoluble copoly(arylene ether nitriles) containing thioether moiety (PENS) were synthesized via nucleophilic aromatic substitution polymerization of 2,6-dichlorobenzonitrile with bisphenol A and sodium sulfide nonahydrate, using N-Methyl-2-Pyrrolidone as solvent in the presence of anhydrous potassium carbonate. The chemical structures of PENS were characterized by FTIR and 1H NMR. The derived copolymers showed high glass transition temperatures in the range of 167–178 °C and excellent thermal stability with the 5% weight loss temperatures ranging from 465 °C to 503 °C. Meanwhile, all of the PENS were amorphous and can be readily cast into transparent films with a tensile strength exceeding 77 MPa and a breaking elongation over 4.8%.In addition, the dielectric constant of all the PENS copolymers showed weak frequency dependence, the dielectric loss showed slight decrease with increasing frequency over the range of 100 Hz to 200 kHz. Therefore, this kind of organosoluble copoly(arylene ether nitriles) containing thioether moiety could be a good candidate as matrix resins for high-performance polymeric materials.
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Acknowledgements
The authors wish to thank for the Sichuan University of Science and Engineering Talent Introduction Project (No.2016RCL35, No. 2015RC56), Material Corrosion and Protection Key Laboratory of Sichuan Province Open Fund Projects (2016CL16) and Key Science and Technology Planning Project of Zigong City (2017XC04).
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Pu, Z., Hu, L., Tian, Y. et al. Synthesis and properties of novel organosoluble copoly(arylene ether nitriles) containing thioether moiety. J Polym Res 25, 100 (2018). https://doi.org/10.1007/s10965-018-1502-x
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DOI: https://doi.org/10.1007/s10965-018-1502-x