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Citation: XU Qu, CAI Ming-Zhong, SONG Cai-Sheng. Synthesis of Poly(arylether ether ketone ketone) (PEEKK) Containing Cyano-groups[J]. Chinese Journal of Applied Chemistry, ;2003, 20(3): 238-241. shu

Synthesis of Poly(arylether ether ketone ketone) (PEEKK) Containing Cyano-groups

1.
College of Chemistry, Jiangxi Normal University, Nanchang 330027

Corresponding author: CAI Ming-Zhong,
Received Date: 25 July 2002
Available Online: 29 November 2002
Fund Project: 江西省自然科学基金资助课题(020312) (020312)

A novel monomer 2,6-diphenoxybenzonitrile (DPOBN) was prepared by condensation of 2,6-dichlorobenzonitrile with phenol in NMP in the presence of KOH and K₂CO₃. A poly(arylether ether ketone ketone)(PEEKK) containing cyano groups was synthesized by low temperature solution polycondensation of 2,6-diphenoxybenzonitrile with terephthaloyl dichloride (TPC) in 1,2-dichloroethane and in the presence of AlCl₃ and NMP. Effects of the molar ratio of DPOBN to TPC and the amounts of AlCl₃ and NMP on polycondensation were investigated. IR, DSC, TG, WAXD techniques were used to characterize the polymer. The results showed that the T_g of the polymer was 180℃, 24℃ more than that of the PEKK(T_g=156℃) and the polymer was noncrystalline. The polymer has an excellent heat-res istance(T_d=495℃) and good solubility in DMF, NMP and DMSO.
- poly (arylether ether ketone ketone),
- diphenoxybenzonitrile,
- terephthaloyl chloride,
- low temperature solution poly condensation
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