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Synthesis and characterization of poly(p-arylene sulfide ketone/Schiff base) copolymers

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Abstract

Poly(p-arylene sulfide ketone/Schiff base) copolymers (PASK/SB) were prepared by solution polycondensation of 4,4′-diflurobenzophenone (DFBP) and N-phenyl(4,4′-diflurodiphenyl) ketimine (DFBI) with sodium sulfide in the presence of sodium hydroxide under normal pressure. Elemental analyses, FT-IR, NMR, DSC, TGA and XRD were used to characterize the resultant copolymers. It was found that the copolymers had good thermal properties with glass transition temperature (T g) of 155.0–172.0°C, melting temperature (T m) of 298–344°C, 5% weight loss temperatures (T d) of 471.0–501.5°C. These copolymers were almost amorphous with the content of DFBI beyond 30%. The polymer with 100% DFBI had excellent solubility, and it could dissolve in some solvents such as tetrahydrofuran (THF) and N-methyl-2-pyrrolidone (NMP). The processability of polymers was improved. Meantime the viscosity of PASK made from hydrolysis of PASK/SB (H-PASK/SB) was greatly improved from 0.135 dL/g to 0.605 dL/g.

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Authors and Affiliations

  1. Analytical and Testing Center, Sichuan University, Chengdu, 610064, China

    Yan-lun Wang, Gang Zhang, Mei-lin Zhang, Yu Fan & Jie Yang  (杨杰)

  2. College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China

    Bao-ying Liu

  3. State Key Laboratory of Polymer Materials & Engineering (Sichuan University), Chengdu, 610065, China

    Jie Yang  (杨杰)

Authors
  1. Yan-lun Wang
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  2. Gang Zhang
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  3. Mei-lin Zhang
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  4. Yu Fan
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  5. Bao-ying Liu
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  6. Jie Yang  (杨杰)
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Corresponding author

Correspondence to Jie Yang  (杨杰).

Additional information

This work was financially supported by the National High Technology Foundation of China (No. 2007AA03Z561).

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Wang, Yl., Zhang, G., Zhang, Ml. et al. Synthesis and characterization of poly(p-arylene sulfide ketone/Schiff base) copolymers. Chin J Polym Sci 30, 370–377 (2012). https://doi.org/10.1007/s10118-012-1124-4

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  • DOI: https://doi.org/10.1007/s10118-012-1124-4

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