High molecular weight poly(p-arylene sulfide ketone): synthesis and membrane-forming properties

  • Guang-ming Yan
  • Zhi-min Li
  • Gang Zhang
  • Hao-hao Ren
  • Shu-shan Yuan
  • Yan Li
  • Jie Yang
Original Paper


High-molecular-weight poly(p-arylene sulfide ketone) (PPSK) was prepared by nucleophilic substitution reaction of 4,4’-diflurobenzophenone (DFBP) and sodium sulfide in the compound solvents of diphenyl sulfone (DPS) and 1,3-dimethyl-2-imidazolidinone (DMI) with catalysts under elevated temperature. The inherent viscosity (ηint) of the PPSK synthesized was 0.703 dl/g. PPSK was characterized by Fourier-transform infrared spectroscopy, elemental analysis, x-ray diffraction, differential scanning calorimetry, and thermogravimetric analysis. It was found that the polymer had excellent thermal properties: glass transition temperature (Tg) was 142.8 °C, melting temperature (Tm) was 362.3 °C. Under nitrogen atmosphere, 5 % (T5%) and 10 % (T10%) weight-loss temperatures were about 498.5 °C and 526.2 °C, respectively, while in the air the T5% and T10% were about 517 °C and 535.8 °C, respectively. The PPSK was found to be a semi-crystalline polymer, as confirmed by XRD. The polymer was insoluble in any solvent except concentrated sulfuric acid at room temperature. A series of the PPSK separating membranes were prepared by dissolving PPSK to concentrated sulfuric acid. The fluxes and the porosities of the separating membranes were in the range of 230–43 L/(m2 · h) and 77.7-84.7 %, respectively. At the same time, these separating membranes showed moderate tensile strength of 1.02-1.88 MPa.


Synthesis Membrane-forming property Properties PPSK 


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Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  1. 1.Institute of Materials Science & Technology, Analytical & Testing CenterSichuan UniversityChengduPeople’s Republic of China
  2. 2.College of Polymer Materials Science and Engineering of Sichuan UniversityChengduPeople’s Republic of China
  3. 3.State Key Laboratory of Polymer Materials Engineering (Sichuan University)ChengduPeople’s Republic of China

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